Готові списки джерел за темами / Pulsed mode

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Добірка наукової літератури з теми "Pulsed mode"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Pulsed mode"

1

Flood, C. J., G. Giuliani, and H. M. van Driel. "Pulsed electro-optic modulation for efficient, active continuous-wave laser mode-locking." Canadian Journal of Physics 71, no. 1-2 (January 1, 1993): 1–4. http://dx.doi.org/10.1139/p93-001.

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We demonstrated efficient active mode-locking of a Nd:YAG laser using broad bandwidth, pulsed electro-optic modulation. A 10 GHz, LiTaO3 traveling wave phase modulator, driven by 300 ps FWHM electrical pulses with less than 1 mW of drive power, was used to generate detector-limited, mode-locked laser pulses of less than 50 ps duration at 76 MHz. Shorter modulator drive pulses are possible and near bandwidth-limited mode-locked pulses should be attainable. The use of pulsed modulation rather than conventional sinusoidal modulation permits both pulse width and pulse build-up time reductions and generally makes active mode-locking competitive with passive mode-locking for relatively low-gain and narrow-bandwidth lasers.
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2

Miraval Zanon, A., F. Ambrosino, F. Coti Zelati, S. Campana, A. Papitto, G. Illiano, G. L. Israel, L. Stella, P. D’Avanzo, and M. C. Baglio. "UV and X-ray pulse amplitude variability in the transitional millisecond pulsar PSR J1023+0038." Astronomy & Astrophysics 660 (April 2022): A63. http://dx.doi.org/10.1051/0004-6361/202243180.

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The transitional millisecond pulsar PSR J1023+0038 is the first millisecond pulsar discovered to emit UV and optical pulses. Here we present the results of the UV and X-ray phase-resolved timing analysis of observations performed with the Hubble Space Telescope, XMM-Newton, and NuSTAR satellites between 2014 and 2021. Ultraviolet pulsations are detected in the high luminosity mode and disappear during low and flaring modes, similar to what is observed in the X-ray band. In the high mode, we find variability in both the UV and X-ray pulse amplitudes. The root mean square pulsed amplitude in the UV band ranges from ~2.1% down to ~0.7%, while it oscillates in the interval 5.5–12% in the X-ray band. As also observed in the optical band, this variability is not correlated with the orbital phase. Notwithstanding the rather low statistics, we have marginal evidence that variations in the pulse amplitude do not occur simultaneously in the UV and X-ray bands. When the UV pulsed amplitude decreases below the detection threshold, no significant variation in the X-ray pulsed amplitude is observed. These oscillations in the pulse amplitude could be caused by small random variations in the mass accretion rate leading to a variation in the size of the intra-binary shock region. Finally, we find that the pulsed flux spectral distribution from the X-ray to the UV band is well fitted using a power-law relation of the form νFνpulsed∼ν0.4. This supports the hypothesis of a common physical mechanism underlying the X-ray, UV, and optical pulsed emissions in PSR J1023+0038.
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3

Shemyakin, A. N., M. Yu Rachkov, N. G. Solov’ev та M. Yu Yakimov. "Radiation Power Control of the Industrial CO2 Laser Excited by а Nonself-Sustained Glow Discharge by Changing the Frequency of Ionization Pulses". Mekhatronika, Avtomatizatsiya, Upravlenie 21, № 4 (11 квітня 2020): 224–31. http://dx.doi.org/10.17587/mau.21.224-231.

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The article describes radiation power control of industrial CO2 lasers of Lantan series excited by а nonself-sustained glow discharge in the automatic mode. These lasers are closed-cycle fast gas-transport lasers excited by a nonself-sustained glow discharge with ionization by periodic-pulsed capacitively coupled auxiliary discharge. In this case, ionization and conductivity are provided by periodic-pulsed capacitively coupled discharge. The energy contribution to molecular oscillations is provided by the passage of the main discharge current through the plasma with electron density given by ionization. This permits easy laser power control, provides excellent optical homogeneity and stability of an active volume together with high laser efficiency. A system of a nonself-sustained glow discharge with ionization by periodic-pulsed capacitively coupled auxiliary discharge, the stages of creation and brief characteristics of the Lantan series lasers is presented. The method of controlling the power of laser radiation by changing the frequency of the ionization pulses is determined. This control method allows operating of the laser in continuous and in pulse-periodic modes with adjustable pulse ratio and pulse duration, and also provides switching from one mode to another. In the continuous mode, the radiation power is controlled by changing the frequency of ionization pulses, which are high voltage pulses with duration of 100 ns, given with the frequency of 1-5 kHz. Pulse-periodic radiation control is performed by modulating ionization pulses that consists of pulses being delivered in batches. The frequency of the pulses in a batch determines the radiation power in a pulse. The frequency of the batches following is the frequency of the pulse mode, and the length of the batch determines the pulses duration. Based on the experimental data, the dependence of the radiation power on the ionization pulses frequency was determined. An experimental system is presented and the measuring accuracy of the laser radiation power and the frequency of ionization pulses is determined. Data acquiring and processing of experimental results were performed using the NI 6008 USB data acquisition device in the LabVIEW programs of National Instruments. To study the dependence of the laser power on Мехатроника, автоматизация, управление, Том 21, № 4, 2020 231 the frequency of the ionization pulses, a regression analysis method was applied. Studies have shown that the dependence of the laser power on the ionization pulses frequency is linear in a wide range of parameters. The equation of the direct regression is calculated. The confidence estimates of the coefficients of the direct regression and the confidence estimates of the deviation of the theoretical direct regression from the empirical one are calculated with a confidence level of 95%.
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4

Tingting Lu, Tingting Lu, Juntao Wang Juntao Wang, Xiaolei Zhu Xiaolei Zhu, Ren Zhu Ren Zhu, Huaguo Zang Huaguo Zang, and Weibiao Chen Weibiao Chen. "Highly efficient single longitudinal mode-pulsed green laser." Chinese Optics Letters 11, no. 5 (2013): 051402–51404. http://dx.doi.org/10.3788/col201311.051402.

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5

Kokovin, A. O., A. V. Kozyrev, and V. Yu Kozhevnikov. "Simulation of negative corona discharge in atmospheric air: from mode of Trichel pulses to stationary discharge." Journal of Physics: Conference Series 2064, no. 1 (November 1, 2021): 012024. http://dx.doi.org/10.1088/1742-6596/2064/1/012024.

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Abstract The paper presents a 2D multi-fluid non-stationary model of a negative corona discharge in atmospheric-pressure air in the needle-to-plane diode. Discharges were simulated in gaps up to 1 cm with an applied voltage in the range of 8-100 kV. The simulation results demonstrate two stages of the discharge evolution: a pulsed-periodic stage called the Trichel pulses mode and a stationary glow discharge mode. The spatio-temporal distributions of the discharge plasma and electric field are shown in detail. Physical mechanism of Trichel pulses formation and transition to the stationary discharge are also revealed. The duration of the Trichel pulse mode gradually decreases with increasing of the applied voltage.
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6

Kandratsyeu, Aleh, Uladzimir Sabaleuski, Luis Redondo, and Andrei G. Pakhomov. "Four Channel 6.5 kV, 65 A, 100 ns–100 µs Generator with Advanced Control of Pulse and Burst Protocols for Biomedical and Biotechnological Applications." Applied Sciences 11, no. 24 (December 11, 2021): 11782. http://dx.doi.org/10.3390/app112411782.

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Анотація:
Pulsed electric fields in the sub-microsecond range are being increasingly used in biomedical and biotechnology applications, where the demand for high-voltage and high-frequency pulse generators with enhanced performance and pulse flexibility is pushing the limits of pulse power solid state technology. In the scope of this article, a new pulsed generator, which includes four independent MOSFET based Marx modulators, operating individually or combined, controlled from a computer user interface, is described. The generator is capable of applying different pulse shapes, from unipolar to bipolar pulses into biological loads, in symmetric and asymmetric modes, with voltages up to 6.5 kV and currents up to 65 A, in pulse widths from 100 ns to 100 µs, including short-circuit protection, current and voltage monitoring. This new scientific tool can open new research possibility due to the flexibility it provides in pulse generation, particularly in adjusting pulse width, polarity, and amplitude from pulse-to-pulse. It also permits operating in burst mode up to 5 MHz in four independent channels, for example in the application of synchronized asymmetric bipolar pulses, which is shown together with other characteristics of the generator.
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7

Bostanjoglo, O., F. Heinricht, and F. Wünsch. "Performance of A Laser-Pulsed Thermal Electron Gun." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 1 (August 12, 1990): 124–25. http://dx.doi.org/10.1017/s0424820100179373.

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High-speed electron microscopy strongly demands a high-brightness electron gun in order to increase the number of image forming electrons. A few years ago, a laser-pulsed high-brightness electron gun was introduced. Fig.1 shows the experimental set-up, A standard triode system was supplemented with a Nd:YAG laser, focussing optics and a modified anode, which incorporates the laser deflection mirror. The frequency doubled laser pulse (τ =5 ns, λ = 532 nm) is focused through a window onto the tip of the tungsten hairpin emitter. The laser treated area (≈ 100 μm diameter) is heated well above the melting point, which results in a strong thermal electron emission. Due to rapid heat-up and fast cool-down of the tungsten surface short electron pulses with a duration of 20 ns and a maximum current of 20 mA at 80 kV are emitted. A destruction of the tungsten wire is avoided, too. Laser energies used for the generation of electron pulses are in the range of 100 μJ. Due to these minor modification, the DC operation of the electron gun is not disabled, which allows a convenient adjustment in the DC mode and then switching into the pulsed operation mode. Fig.2 shows a typical electron pulse emitted by the gun. Shorter electron pulses up to 5 ns can be generated by a beam blanking unit.
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8

Giner, J., V. Gimeno, G. V. Barbosa-Cánovas, and O. Martín. "Effects of Pulsed Electric Field Processing on Apple and Pear Polyphenoloxidases." Food Science and Technology International 7, no. 4 (August 2001): 339–45. http://dx.doi.org/10.1106/mj46-8j9u-1h11-t0ml.

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Анотація:
The feasibility of inhibiting polyphenoloxidase from apple and pear by pulsed electric field processing was evaluated. These treatments significantly lowered polyphenoloxidase activity of enzyme extracts from apple ( Golden deliciousvar.) and pear ( Blanquillavar.). Exponential decay pulses were generated by a laboratory scale electric pulse generator and applied in bipolar mode. Pulse duration was 0.02 ms and electric field intensities were up to 24.6 kV/cm. The temperature of samples never exceeded 15 ºC during pulsed electric field processing treatments. Polyphenoloxidase activities were reduced up to 3.15% and 38.0% initial value in apple extract at 24.6 kV/cm and pear extract at 22.3 kV/cm both for 6 ms total treatment time, respectively. Apple and pear polyphenoloxidase exposed to pulsed electric field processing diminishes their activities following first order kinetics. Rate constants ranged from 132 to 440 ms 1 for apple polyphenoloxidase, whereas for pear 1 and changed exponentially with the applied electric field intensity. Residual polyphenoloxidase activity was correlated to energy density by an exponential decay model.
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9

Holzwarth, Michael J., Alexander M. Gigler, and Othmar Marti. "Digital Pulsed Force Mode." Imaging & Microscopy 8, no. 4 (November 2006): 37–38. http://dx.doi.org/10.1002/imic.200790065.

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10

Fischer, Baruch, Boris Vodonos, Shimie Atkins, and Alexander Bekker. "Dispersion-mode pulsed laser." Optics Letters 25, no. 10 (May 15, 2000): 728. http://dx.doi.org/10.1364/ol.25.000728.

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Дисертації з теми "Pulsed mode"

1

Yagci, Mahmut Emre. "Development Of A Picosecond Pulsed Mode-locked Fiber Laser." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615773/index.pdf.

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Анотація:
Fiber lasers represent the state-of-the-art in laser technology and hold great promise for a wide range of applications because they have a minimum of exposed optical interfaces, very high efficiency, and are capable of exceptional beam quality. In the near future, the most important markets such as micromachining, automotive, biomedical and military applications will begin to use this technology. The scope of this thesis is to design and develop a short picosecond pulsed fiber laser using rare-earth doped fiber as a gain medium. The proposed master oscillator power amplifier (MOPA) will be used to generate pulses with high repetition rates. In this study, first we explain the basic theoretical background of nonlinear optics and fiber laser. Then, the numerical simulation will be introduced to explain how the laser system design and optimization. The simulation is based on nonlinear Schrö
dinger equation with the method of split-step evaluation. The brief theoretical background and simulation results of the laser system will be shown. Finally, the experimental study of the developmental fiber laser system that comprises an oscillator, preamplifier and power amplifier will be discussed.
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2

Yuksel, Yuksel. "Thermoelectric Cooling Of A Pulsed Mode 1064 Nm Diode Pumped Nd:yag Laser." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612550/index.pdf.

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Анотація:
Since most of the energy input is converted to thermal energy in laser applications, the proper thermal management of laser systems is an important issue. Maintaining the laser diode and crystal temperature distributions in a narrow range during the operation is the most crucial requirement for the cooling of a laser system. In the present study, thermoelectric cooling (TEC) of a 1064 nm wavelength diode pumped laser source is investigated both experimentally and numerically. During the heat removal process, the thermal resistance through and between the materials, the proper integration of the TEC assembly, and the heat sink efficiency become important. For the aim of evaluating and further improving the system performance, various assembly configurations, highly conductive components, efficient interface materials and heat sink alternatives are considered. Several experiments are conducted during the system development stage, and parallel numerical simulations are performed both for comparison and also for providing valuable input for the system design. Results of the experiments and the simulations agree well with each other. As the laser device works in the transient regime, the experiments and the simulations are also implemented in this regime. In the final part of the study, the experiments are performed under the actual device working conditions. It is proved that with the designed TEC module and the copper heat sink system, the laser device can operate longer than the required operational time successfully.
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3

Hoogland, Sjoerd. "Optically pumped vertical external cavity surface emitting semiconductor lasers." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289504.

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4

Santos, José Angel. "Transcutaneous pulsed mode power delivery to implants for the treatment of atrial fibrillation." Thesis, University of Ulster, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251911.

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5

Dilwith, Jason. "Feasibility Study of Laser Ablation using Long Pulsed 300W, CW Single Mode Fiber Laser." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-06132005-191622/.

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Many applications now require micro sized holes that are difficult to produce with conventional methods. The entrance of lasers in the industry has brought about a better method for producing these holes. However the ultra-short pulse lasers that are normally used are extremely expensive and require many pulses to remove the material due to the small amount of energy they deposit. The objective of this research is to examine the feasibility of laser ablation using a 300W, CW Single Mode fiber laser which has high continuous power output for each pulse and has excellent beam quality. The results show that laser ablation occurs when a 100mm lens is used with pulse durations at 40 microseconds or below. Using one 18 microsecond pulse, a blind hole of 43.6 microns in diameter and 23.6 microns in depth with an aspect ratio of 0.54 can be created with little heat affected zone. This performance is comparable to nanosecond lasers, but with much higher hole depth per pulse. It was also found that the pulse duration must be short enough so that the ablating effect of the initial spike of an enhanced pulse is not nullified due to melting. At longer pulse durations (50 microseconds or more), raised surfaces are created instead of holes.
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6

Eryilmaz, Ertan. "Design And Construction Of A Cw Mode Nd:yag Laser Prototype." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605521/index.pdf.

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Анотація:
In this thesis a theoretical background of Nd:YAG lasers has been presented and key parameters of a design have been stated. Both pulsed mode and CW mode designs have been made
a 500mJ xenon flash lamp has been investigated as the pulsed light source and a 500W tungsten halogen lamp has been used as the continuous light source for optical pumping. Closed cooling system has been constructed. De-ionized water has been used as coolant. The goal has been acomplished by constructing a CW mode prototype. The output power has been calculated. Dependence of output power to the reflectivity of output coupler is simulated and optimum reflectivity is calculated. Theoretical emission bands of Nd:YAG have been observed experimentally.
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7

Афанасьева, О. В., та А. В. Коптяков. "Лазерная очистка металлов". Thesis, Science and education LTD, 2019. http://openarchive.nure.ua/handle/document/9247.

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8

Fang, Qiang. "2 μm Pulsed Fiber Laser Sources and Their Application in Terahertz Generation". Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/232475.

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Анотація:
In this dissertation, an all-fiber-based single frequency nanosecond pulsed laser system at ~ 1918.4 nm in master-oscillator-power-amplifier (MOPA) configuration is present. The nanosecond pulse seed is achieved by directly modulating a continuous wave (CW) single frequency fiber laser using a fast electro-optical modulator (EOM) driven by an arbitrary waveform generator (AWG). One piece of single mode, large core, polarization-maintaining (PM) highly thulium-doped (Tm-doped) germanate glass fiber (LC-TGF) is used to boost the pulse power and pulse energy of these modulated pulses in the final power amplifier. This laser system can work in both high power and high energy regime: in high power regime, to the best of our knowledge, the highest average power 16 W and peak power 78.1 kW are achieved for single frequency transform-limited ~2.0 ns pulses at 500 kHz and 100 kHz repetition rate, respectively: In high energy regime, nearly 1 mJ and half mJ pulse energy is obtained for ~15 ns pulses at 1 kHz repetition rate and 5 kHz repetition rate, respectively. Theoretical modeling of the large-core highly Tm-doped germanate glass double-cladding fiber amplifier (LC-TG-DC-FA) is also present for 2&mum nanosecond pulse amplification. A good agreement between the theoretical and experimental results is achieved. The model can simulate the evolution of pump power, signal energy, pulse shape and the amplified stimulated emission (ASE) in the amplifier. It can also be utilized to investigate the dependence of the stored energy in the LC-TGF on the pump power, seed energy and repetition rate, which can be used to design and optimize the LC-TG-DC-FA to achieve higher pulse energy and average power. Two channel of high energy nanosecond pulses (at 1918.4 nm and 1938 nm) are utilized to generate THz wave in a quasi-phase-matched (QPM) gallium arsenide (GaAs) based on difference frequency generation. THz wave with ~ 5.4μW average power and ~18 mW peak power has been achieved. Besides, one model is built to simulate a singly resonated THz parametric oscillator. The threshold, the dependence of output THz energy on pump energy has been investigated through this model. One pump enhanced THz parametric oscillator has been proposed. The enhancement factor of the nanosecond pulses in a bow-tie ring cavity has been calculated for different pulse duration, cavity length and the transmission of the coupler. And the laser resonances in the ring cavity have been observed by using a piezo to periodically adjust the cavity length. We also build an all-fiber thulium-doped wavelength tunable mode-locked laser operating near 2&mum. Reliable self-starting mode locking over a large tuning range (>50 nm) using fiber taper based carbon nanotube (FTCNT) saturable absorber (SA) is observed. Spectral tuning is achieved by stretching another fiber taper. To the best of our knowledge, this is the first demonstration of an all-fiber wavelength tunable mode-locked laser near 2&mum.
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9

Venkatraman, Dheera. "Tools for quantum optics : pulsed polarization-maintaining Er-doped fiber laser and spatial mode manipulation in spontaneous parametric downconversion." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42115.

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Анотація:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
Includes bibliographical references (p. 50-52).
Two separate projects were undertaken to improve technology for entangled photon sources, useful for quantum optics. In one project, a pulsed, mode-locked erbium-doped fiber laser, designed to be used as a seed laser for a 390 nm source, was built using polarization-maintaining components to address polarization drift. The fiber laser operated at a center wavelength of 1560.0 nm with an output power of 1 to 2.5 mW, and mode-locked with a repetition rate of 31.1 MHz. The laser also exhibited bandwidth tunability from 0.045 to 0.095 nm, as a function of the input pump power. A commercial 5 W erbium-doped fiber amplifier and a second harmonic generation crystal were used to obtain pulses at 780 nm with an average power of 3 W. The next second harmonic generation stage, for generating the desired 390 nm output, remains to be built. In the second project, we tried to optimize the coupling efficiency of light generated from spontaneous parametric downconversion (SPDC) into single-mode optical fibers, which are useful for transporting entangled photons. Using a setup with a tunable 532 nm pump waist in a nonlinear crystal, we achieved an effective coupling efficiency of 48.8% of the 797 nm signal light into a single-mode fiber, higher than previously obtained in the laboratory. Efficient single-mode operation of SPDC would enable the construction of a high-flux fiber-coupled source of nondegenerate entangled photons at 797 nm and 1600 nm.
by Dheera Venkatraman.
M.Eng.
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10

Liu, Chang. "Structure, mechanical and tribological properties of hydrogen-free amorphous carbon films deposited by dual-frequency mode pulsed-DC magnetron sputtering." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17921/.

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Анотація:
Amorphous carbon (hydrogenated and hydrogen-free) films have attracted much attention during the past few decades due to their unique properties such as high hardness, low coefficient of friction (CoF) and low wear rate. Compared with the hydrogenated amorphous carbon films, hydrogen-free amorphous carbon (a-C) films, with higher hardness, are believed to have better tribological properties especially in humid environments. Different deposition parameters (or techniques) will strongly affect the microstructure of the a-C films and thus influence their mechanical and tribological properties. For magnetron sputtering, pulsing both the sputtering target and the substrate at significant different frequencies (dual frequency DC-pulsed magnetron sputtering) provides more advantages and flexibility of controlling the film microstructure. Therefore, the aim of this PhD thesis is to investigate the effect of substrate bias parameters (i.e. voltage and duty cycle) and silicon doping concentration (to increase the deposition rate and reduce the internal stress) on the mechanical and tribological properties obtained in non-hydrogenated a-C films by such deposition techniques. Four a-C films were deposited at different substrate negative bias voltages (50 V - 170 V), which have a predominantly sp2 bonded structure. Film hardness, reduced elastic modulus and internal stress of the a-C films all initially increased with increasing bias voltage to a maximum at 130 V and then decreased when the voltage was increased further. The average CoF when sliding against an SAE 52100 steel counterface is around 0.3 in humid environments. The specific wear rate did not change in an obvious way with the voltage (from 50 V to 130 V), but increased when the voltage was at 170 V. A further four a-C films were deposited at different substrate bias duty cycles (10% to 40%), which also show a predominantly sp2 bonded structure. Film hardness and reduced elastic modulus follow similar trends to the a-C films deposited at different bias voltages (i.e. first increasing and then decreasing beyond a certain threshold). The film compressive internal stress continuously increases with the substrate bias duty cycle. The average CoF under similar test conditions as those for a-C films deposited by different bias voltages is around 0.2-0.3. The a-C film deposited at 30% duty cycle shows the lowest wear rate and the 40% one shows the highest. The effect on the wear rate of the substrate bias duty cycle appears more pronounced than that of bias voltage. Doping with silicon in a-C film (18.2 at.%, 28.8 at.% and 41.5 at. %) led to an increase of the deposition rate, compared to the ‘pure’ a-C films. Doping with smaller silicon concentration ( < 20 at. %), although reducing hardness, will also reduce the compressive internal stress. However, a higher silicon concentration appears to increase the internal stress. a-C film (or a-C/a-C:Si film system) deposited by dual-frequency mode DC magnetron sputtering with excellent mechanical and tribological performance is a good candidate for the real tribological applications, especially on the stainless steel substrate.
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Книги з теми "Pulsed mode"

1

Santos, Jose Angel. Transcutaneous pulsed mode power delivery to implants for the treatment of atrial fibrillation. [S.l: The author], 2002.

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2

Herrmann, Joachim. Lasers for ultrashort light impulses. Amsterdam: North-Holland, 1987.

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3

Cord, Gregory A. Free electron laser short pulse simulation and two-mode sideband analysis. Monterey, Calif: Naval Postgraduate School, 1991.

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4

B, Altshuler Grigori, D.S. Rozhdestvensky All-Union Optical Society., Optical Society of America, and Society of Photo-optical Instrumentation Engineers., eds. Mode-locked lasers and ultrafast phenomena: ICONO '91, 24-27 September 1991, St. Petersburg, Russia. Bellingham, Wash, USA: SPIE, 1992.

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5

Ultrafast optics. Hoboken, N.J: Wiley, 2009.

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6

Lu, Yen. A signal simulation model of pulsed doppler ultrasound clutter from a static artery wall. Ottawa: National Library of Canada, 1994.

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7

Campbell, Peter R. M. An ocean medium pulse propagation model based on linear systems theory and the WKB approximation. Monterey, Calif: Naval Postgraduate School, 1989.

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8

Burin, Amy Diana. Bench test model of the human skull for testing the Variable Frequency Pulse Phase-Locked Loop Instrument. Monterey, Calif: Naval Postgraduate School, 1996.

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9

Susan, Spaeth Kyle. Cattleman's Pride: Long Tall Texans - 30, Diana Palmer: The Essential Collection - 13. Toronto: Harlequin, 2011.

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10

Active passive mode locked cavity dumped, Nd:YAG pulsed laser with variable pulse duration. Mumbai: Bhabha Atomic Research Centre, 2004.

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Частини книг з теми "Pulsed mode"

1

Gigler, Alexander, and Othmar Marti. "Pulsed Force Mode SFM." In Scanning Probe Microscopies Beyond Imaging, 208–49. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527608516.ch8.

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2

Burghardt, B., W. Mückenheim, and D. Basting. "Single-Mode Operation of Pulsed Dye Lasers." In Laser Spectroscopy VIII, 430–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-540-47973-4_137.

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3

Kreisl, P., J. Schalwig, A. Friedberger, and G. Müller. "Hydrocarbon Detection using MOS Capacitors in a Temperature-Pulsed Mode." In Transducers ’01 Eurosensors XV, 1734–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59497-7_410.

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4

Basov, Nikolay G., Anatoly S. Bashkin, Valery I. Igoshin, Anatoly N. Oraevsky, and Vladimir A. Shcheglov. "Kinetics and Numerical Analysis of Chain-Reaction Chemical Lasers (Pulsed Mode)." In Chemical Lasers, 107–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-70961-6_3.

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5

Soppera, Olivier, Ali Dirani, Safi Jradi, Vincent Roucoules, and Hamidou Haidara. "Investigation of Nanopatterned Functional Polymer Surfaces by AFM in Pulsed Force Mode." In Scanning Probe Microscopy in Nanoscience and Nanotechnology 3, 291–315. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25414-7_11.

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6

Chiu, P. H., P. Pax, and R. Aubert. "Compression of the High Energy Pulsed Mode-Locked Nd:YLF and Nd:YAG Lasers." In Ultrafast Phenomena VI, 44–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83644-2_13.

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7

Steiger, A., K. Grützmacher, and M. I. de la Rosa. "Efficient Generation of Pulsed Single-Mode Radiation Tunable in the UV-C Region." In Laser in Forschung und Technik / Laser in Research and Engineering, 308–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80263-8_68.

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8

Hild, S., U. Krotil, and O. Marti. "Pulsed Force Mode: A new method for characterizing thin silane films by adhesive force measurements." In Tribology Issues and Opportunities in MEMS, 247–60. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5050-7_18.

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9

Nouri, Soraya. "Diagnosis of Total Anomalous Pulmonary Venous Return with Combined Pulsed Doppler, M-Mode, and Two-Dimensional Echocardiography." In Pediatric Cardiology, 176–82. New York, NY: Springer New York, 1986. http://dx.doi.org/10.1007/978-1-4613-8598-1_48.

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10

Sacchi, C. A., and F. Docchio. "Interaction of Q-Switched and Mode-Locked Nd: YAG Laser Pulsed with Ocular Media: An Experimental Analysis." In LASER Optoelectronics in Medicine, 505. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-72870-9_130.

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Тези доповідей конференцій з теми "Pulsed mode"

1

Chepusov, A. S., A. A. Komarskiy, S. R. Korzhenevskiy, and O. D. Krasniy. "Study of field electron emission properties of commercial graphite cathodes in pulse-repetitive mode." In VIII Information school of a young scientist. Central Scientific Library of the Urals Branch of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.32460/ishmu-2020-8-0007.

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Анотація:
The article considers field emission cathodes from industrial graphites MG, MPG-7, and GMZ operated in the pulse-periodic mode with the pulse repetitionrate of 1 to 30 Hz. The operation of field emitters in the pulsed mode differs from operation at a constant voltage. Under stabilization of the high potential level, the amplitude of the pulses of the emission current decreases that leads to increasing the operating voltage in the pulsed mode. During operation of the graphite cathode (when the pulse current is recorded), the operating voltage at the anode stabilizes and oscillates within 5%. Operation in the direct current mode under similar conditions is accompanied by a change in the voltage value by more than 10 %.
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2

Fischer, B., B. Vodonos, S. Atkins, and A. Bekker. "Dispersion-mode pulsed laser." In Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39. IEEE, 2000. http://dx.doi.org/10.1109/cleo.2000.906751.

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3

Yuryshev, Nikolai N., and Nikolai P. Vagin. "Pulsed mode of COIL." In International Symposium on High-Power Laser Ablation 2002, edited by Claude R. Phipps. SPIE, 2002. http://dx.doi.org/10.1117/12.482123.

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4

Cheng, Gary J., Daniel Pirzada, Xin Ai, and Ben Li. "Numerical Simulation on Short Pulsed Laser Heating of Semiconductor Thin Films: The Case of GaAs." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16214.

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The results of numerical simulation of heat transfer phenomena in GaAs thin films irradiated by a pulsed laser are presented. A numerical algorithm involving a discontinuous Galerkin finite element method for the solution of hyperbolic heat conduction is used to solve the dual-phase-lag heat conduction equation The effects of different process parameters on heat propagation are analyzed. The heat conduction mode after pulsed laser irradiation is strongly dependent upon the incident laser energy density, film thickness and pulse duration. The heat transfer behavior for nano-, pico- and femto- second pulses has been studied and compared. A wave-type heat transfer phenomena was observed when pulse duration is of the order of relaxation time of the material being heated. It was found that for sub-picosecond pulses, the heat transfer occurs only by a thermal shock wave.
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5

Bente, Erwin, Martijn Heck, Pascual Munoz, Amandine Renault, Richard Notzel, and Meint Smit. "Fast pulsed mode-locked lasers." In 2008 Joint Conference of the Opto-Electronics and Communications Conference (OECC) and the Australian Conference on Optical Fibre Technology (ACOFT). IEEE, 2008. http://dx.doi.org/10.1109/oeccacoft.2008.4610634.

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6

McGrane, P. "Mode selectivity in one-dimensional co-axial Bragg structures for a high power free electron maser." In Pulsed Power Seminar. IEE, 2003. http://dx.doi.org/10.1049/ic:20030097.

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Ludeking, Lars D., and Andrew J. Woods. "Simulation boundary boundry model for multi-mode, multi-frequency signals using the Higdon operator." In 2015 IEEE Pulsed Power Conference (PPC). IEEE, 2015. http://dx.doi.org/10.1109/ppc.2015.7296973.

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8

Gallier, P., and X. Pages. "200N bipropellant thruster pulsed mode behavior." In 35th Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-2467.

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9

Lu, Ming-Chen, Jieh-Yuan Houng, and Meng-Lin Li. "Backward-mode ultrafast pulsed magnetomotive ultrasound." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8091978.

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10

Lu, Ming-Chen, Jieh-Yuan Houng, and Meng-Lin Li. "Backward-mode ultrafast pulsed magnetomotive ultrasound." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8092096.

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Звіти організацій з теми "Pulsed mode"

1

Yamamoto Junji, D. J. Massoletti, D. W. Heikkinen, and Kenji Sumita. Operation in pulsed mode at RTNS-II. Office of Scientific and Technical Information (OSTI), September 1987. http://dx.doi.org/10.2172/6380914.

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2

Dr. Anatoly Shteynberg, PhD. Sliding Mode Pulsed Averaging IC Drivers for High Brightness Light Emitting Diodes. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/889754.

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3

Lambrakos, S. G., and A. Shabaev. Temperature Histories of Ti-6Al-4V Pulsed-Mode Laser Welds Calculated Using Multiple Constraints. Fort Belvoir, VA: Defense Technical Information Center, August 2015. http://dx.doi.org/10.21236/ada625867.

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4

Smith, G. V., and B. E. Lewis. Design of a pulsed-mode fluidic pump using a venturi-like reverse flow diverter. [With no packing glands, mechanical seals or moving parts]. Office of Scientific and Technical Information (OSTI), February 1987. http://dx.doi.org/10.2172/6806996.

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5

Alton, G. D. (Evaluation of the high intensity plasma sputer negative ion source and to test the response of the University of Tsukuba 13-MV tandem accelerator to mA intensity level pulsed mode heavy negative ion beams). Office of Scientific and Technical Information (OSTI), July 1988. http://dx.doi.org/10.2172/5652338.

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6

Chen, Kun-Mu, Dennis P. Nyquist, and Edward J. Rothwell. Radar Target Discrimination and Identification Using Extinction-Pulses and Single-Mode Extraction Pulses. Fort Belvoir, VA: Defense Technical Information Center, January 1991. http://dx.doi.org/10.21236/ada232162.

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7

Kotlyar, O. (Working model of new turbine pulser). Office of Scientific and Technical Information (OSTI), February 1992. http://dx.doi.org/10.2172/5868351.

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8

Dawson, J., M. Messerly, and J. An. Fiber Laser Replacement for Short Pulse Ti:Sapphire Oscillators -- Scalable Mode Locking to Record Pulse Energies. Office of Scientific and Technical Information (OSTI), February 2006. http://dx.doi.org/10.2172/889996.

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9

Williams, James H., Nagem Jr., Yeung Raymond J., and Hubert K. Comparison of Wave-Mode Coordinate and Pulse Summation Methods. Fort Belvoir, VA: Defense Technical Information Center, December 1986. http://dx.doi.org/10.21236/ada177795.

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10

Nichols, Daniel Marc, and Troy Unruh. Pulse Mode Calibration of the Micro Pocket Fission Detector. Office of Scientific and Technical Information (OSTI), August 2019. http://dx.doi.org/10.2172/1547331.

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