Bibliographies thématiques / Gigahertz repetition rate laser source

Littérature scientifique sur le sujet « Gigahertz repetition rate laser source »

Auteur : Grafiati
Publié le 11 mars 2023

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Articles de revues sur le sujet "Gigahertz repetition rate laser source"

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Shang, Jingcheng, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Yuefeng Zhao, Yuzhi Song et al. « Gigahertz-repetition rate, high power, ultrafast Tm-doped fiber laser source ». Optics & ; Laser Technology 153 (septembre 2022) : 108206. http://dx.doi.org/10.1016/j.optlastec.2022.108206.

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Shang, Jingcheng, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Yuefeng Zhao, Yuzhi Song et al. « Gigahertz-repetition rate, high power, ultrafast Tm-doped fiber laser source ». Optics & ; Laser Technology 153 (septembre 2022) : 108206. http://dx.doi.org/10.1016/j.optlastec.2022.108206.

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Xiang, Chao, Junqiu Liu, Joel Guo, Lin Chang, Rui Ning Wang, Wenle Weng, Jonathan Peters et al. « Laser soliton microcombs heterogeneously integrated on silicon ». Science 373, no 6550 (1 juillet 2021) : 99–103. http://dx.doi.org/10.1126/science.abh2076.

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Silicon photonics enables wafer-scale integration of optical functionalities on chip. Silicon-based laser frequency combs can provide integrated sources of mutually coherent laser lines for terabit-per-second transceivers, parallel coherent light detection and ranging, or photonics-assisted signal processing. We report heterogeneously integrated laser soliton microcombs combining both indium phospide/silicon (InP/Si) semiconductor lasers and ultralow-loss silicon nitride (Si3N4) microresonators on a monolithic silicon substrate. Thousands of devices can be produced from a single wafer by using complementary metal-oxide-semiconductor–compatible techniques. With on-chip electrical control of the laser-microresonator relative optical phase, these devices can output single-soliton microcombs with a 100-gigahertz repetition rate. Furthermore, we observe laser frequency noise reduction due to self-injection locking of the InP/Si laser to the Si3N4 microresonator. Our approach provides a route for large-volume, low-cost manufacturing of narrow-linewidth, chip-based frequency combs for next-generation high-capacity transceivers, data centers, space and mobile platforms.
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Stormont, B., I. G. Cormack, M. Mazilu, C. T. A. Brown, D. Burns et W. Sibbett. « Low-threshold, multi-gigahertz repetition-rate femtosecond Ti:sapphire laser ». Electronics Letters 39, no 25 (2003) : 1820. http://dx.doi.org/10.1049/el:20031187.

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Weingarten, K. J., U. Keller, D. C. Shannon et R. W. Wallace. « Two-gigahertz repetition-rate, diode-pumped, mode-locked Nd:YLF laser ». Optics Letters 15, no 17 (1 septembre 1990) : 962. http://dx.doi.org/10.1364/ol.15.000962.

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Kemp, A. J., B. Stormont, B. Agate, C. T. A. Brown, U. Keller et W. Sibbett. « Gigahertz repetition-rate from directly diode-pumped femtosecond Cr:LiSAF laser ». Electronics Letters 37, no 24 (2001) : 1457. http://dx.doi.org/10.1049/el:20011008.

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Yu, C. X., H. A. Haus, E. P. Ippen, W. S. Wong et A. Sysoliatin. « Gigahertz-repetition-rate mode-locked fiber laser for continuum generation ». Optics Letters 25, no 19 (1 octobre 2000) : 1418. http://dx.doi.org/10.1364/ol.25.001418.

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Song, Jiazheng, Yuanshan Liu et Jianguo Zhang. « L-band mode-locked femtosecond fiber laser with gigahertz repetition rate ». Applied Optics 58, no 27 (18 septembre 2019) : 7577. http://dx.doi.org/10.1364/ao.58.007577.

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Cheng, Huihui, Wei Lin, Zhengqian Luo et Zhongmin Yang. « Passively Mode-Locked Tm3+-Doped Fiber Laser With Gigahertz Fundamental Repetition Rate ». IEEE Journal of Selected Topics in Quantum Electronics 24, no 3 (mai 2018) : 1–6. http://dx.doi.org/10.1109/jstqe.2017.2657489.

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Schellhorn, Martin, Marc Eichhorn, Christelle Kieleck et Antoine Hirth. « High repetition rate mid-infrared laser source ». Comptes Rendus Physique 8, no 10 (décembre 2007) : 1151–61. http://dx.doi.org/10.1016/j.crhy.2007.09.007.

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Thèses sur le sujet "Gigahertz repetition rate laser source"

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Messineo, Giuseppe. « The MIR experiment : quantum vacuum and dynamical Casimir effect ». Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4572.

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2009/2010
This thesis concerns one of the few low energy experimental efforts aiming to test Quantum Electrodynamics. The experiment MIR (Motion Induced Radiation) studies the quantum vacuum in the presence of accelerated boundaries. According to Quantum Electrodynamics, a non-uniformly accelerated mirror in vacuum feels a friction force due to the interaction with the vacuum photons. As a consequence, real photons are produced in the process, which is known as dynamical Casimir effect. The radiated energy is emitted at the expense of the mechanical energy of the mirror. The effect has never been observed experimentally, since it is very feeble. Only recently a few experimental approaches have been proposed. The theory of the dynamical Casimir effect has been treated extensively in literature. According to the models proposed, for harmonic oscillations the effect is proportional to the oscillation frequency. As all the papers refer to frequencies of the order of a gigahertz, it is not possible to tackle the problem of obtaining a moving boundary with a purely mechanical approach, for example employing piezoelectric transducers or acoustic excitations, due to the large amount of energy required to keep a massive object in motion. A solution to this problem was proposed at the end of the 80's and has been adopted in the MIR experiment. In this framework the moving boundary is a semiconductor slab that switches periodically from complete transparency to total reflection when illuminated by a train of laser pulses. In this way one obtains a time variable mirror which mimics a physical oscillation, without the burden of overcoming the inertia of the mirror. Even so, the number of photons expected is extremely small. The MIR experimental strategy to enhance the photon production is to have the mirror as the wall of a resonating cavity. In this case, if the repetition rate of the laser is about twice a resonance frequency of the cavity, a parametric amplification process occurs, resulting in an enhancement of the number of photons by a factor which depends on the Q-value of the cavity. To this end, superconducting cavities are employed in the experiment.
Questa tesi riguarda uno dei pochi esperimenti di bassa energia dedicati allo studio dell'Elettrodinamica Quantistica. L'esperimento MIR (Motion Induced Radiation) studia il vuoto quantistico in presenza di condizioni al contorno accelerate. Secondo l'Elettrodinamica Quantistica, uno specchio non uniformemente accelerato nel vuoto risente di una forza di attrito dovuta all'interazione con i fotoni del vuoto. In conseguenza di ciò in questo processo, noto come effetto Casimir dinamico, vi è produzione di fotoni reali. L'energia irradiata viene emessa a scapito dell'energia meccanica dello specchio. L'effetto è molto debole e non è mai stato osservato sperimentalmente. Solo di recente sono stati proposti alcuni approcci sperimentali, mentre gli aspetti teorici sono stati trattati ampiamente in letteratura. Secondo i modelli proposti, nel caso di oscillazioni armoniche l'effetto è proporzionale alla frequenza di oscillazione. Poiché tutti gli articoli fanno riferimento a frequenze dell'ordine di un gigahertz, con un approccio puramente meccanico, ad esempio impiegando trasduttori piezoelettrici o eccitazioni acustiche, non è possibile risolvere il problema di ottenere uno specchio in movimento a causa della grande quantità di energia richiesta per mantenere un oggetto massivo in moto. Una soluzione a questo problema è stata proposta alla fine degli anni '80 ed è stata adottata nell'esperimento MIR. L'idea è che la parete in movimento possa essere sostituita da un lastra di semiconduttore che periodicamente passa da uno stato di totale trasparenza ad uno di alta riflettività, per illuminazione da parte di un treno di impulsi laser. In tal modo è possibile ottenere un specchio variabile nel tempo che riproduce una oscillazione fisica, senza la necessità di superare l'inerzia dello specchio. Anche in questo caso tuttavia, il numero di fotoni previsto è estremamente ridotto. La strategia sperimentale di MIR per aumentare la produzione di fotoni è quella di utilizzare lo specchio variabile come parete di una cavità risonante. Se la frequenza di ripetizione del laser è circa due volte la frequenza di risonanza della cavità, si verifica un processo di amplificazione parametrica, con un conseguente aumento del numero di fotoni prodotti. Poiché questo incremento dipende dal Q-valore della cavità, nell'esperimento vengono impiegate cavità superconduttrici.
XXIII Ciclo
1980
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Häring, Reto Andreas. « Miniature pulsed laser sources : repetition rates from Kilohertz to Gigahertz / ». Zürich, 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14454.

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Gao, Ying [Verfasser], et Jörg [Akademischer Betreuer] Schreiber. « High repetition rate laser driven proton source and a new method of enhancing acceleration / Ying Gao ; Betreuer : Jörg Schreiber ». München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1214180353/34.

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Bonamis, Guillaume. « Conception et réalisation d’une source laser femtoseconde GHz et applications au régime d’ablation très haute cadence ». Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0293.

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Ces deux dernières décennies, la technologie des lasers femtosecondes a considérablement gagné en maturité et en fiabilité. Ces impulsions permettent aujourd’hui de réaliser des procédés de micro-usinage avec des dommages thermiques minimes, autorisant ainsi de travailler avec une grande précision sur des matériaux fortement sensibles à la température. Néanmoins, l’implantation de cette technologie dans le marché des applications industrielles est freinée par une productivité insuffisante. Pour pallier à ce problème, les stratégies utilisées consistent en une optimisation des procédés et en l’obtention de puissances moyennes de plus en plus élevées avec ces sources laser. Une autre voie propose d’augmenter l’efficacité des procédés d’ablation en délivrant différemment l’énergie sur la matière : par rafales d’impulsions de faible énergie plutôt que par impulsions uniques de forte énergie.De récents travaux ont montré que l’utilisation de rafales d’impulsions à des cadences de l’ordre du GHz permet d’atteindre des niveaux d’efficacités supérieurs d’un ordre de grandeur à ceux de l’usinage par impulsions femtosecondes classique. Ces résultats encourageants sont néanmoins controversés, d’autres travaux ayant par la suite mis en évidence des niveaux d’efficacité en deçà des attentes mais aussi la présence de dommages thermiques sur les matériaux usinés. Une étude approfondie de ce potentiel nouveau procédé d’usinage est donc nécessaire afin de s’assurer d’une part qu’il présente bien un intérêt et d’autre part de mettre en évidence les conditions optimales pour son utilisation. Pour cela, différents oscillateurs optiques délivrant des rafales d’impulsions femtosecondes à des cadences de l’ordre du GHz ainsi que des amplificateurs ont été développées. Ces systèmes lasers innovants présentent une grande flexibilité sur les paramètres laser accessibles (cadence et énergie des impulsions, nombre d’impulsions par rafale notamment). Cette flexibilité nous a permis de mener une étude approfondie du procédé d’ablation par rafales GHz sous la forme de nombreux essais d’usinage sur des matériaux d’intérêts industriel. Cette étude a mis en évidence l’influence des différents paramètres laser et a ainsi permis d’expliquer l’inhomogénéité des résultats obtenus avec ce procédé et d’orienter l’utilisation de ce procédé dans des conditions favorables à l’obtention d’un usinage efficace et de bonne qualité
These last two decades, femtosecond laser technology has gained considerably in terms of maturity and reliability. These laser pulses enable materials micro-machining with minimal thermal collateral effects, thus allowing to work with an outstanding precision, even on materials highly sensitive to temperature. Nevertheless, the penetration of femtosecond processing into the industrial manufacturing market is limited due to an insufficient productivity. The current strategies consist of optimizing the processes on the one hand and increasing the average power of these laser sources on the other hand. Another way suggests increasing the femtosecond ablation process efficiency by delivering bursts of low-energy pulses instead of one highly energetic pulse.Recent works showed that using bursts of pulses at repetition rates on the order of GHz allows to reach ablation rates one order of magnitude higher than the ones obtained by standard femtosecond pulse machining. Nevertheless, these promising results are controversial, as other works point out levels of efficiency lower than expected, added to collateral thermal damages on the machined materials. A thorough study of this new ablation regime is thus necessary to ensure that its interest is justified on the one hand, and to point out the optimal configurations of its use on the other hand. Several optical oscillators delivering bursts of femtosecond pulses at GHz-level repetition rates and laser amplifiers have been developed to this purpose. These innovating laser systems benefit from great flexibility in terms of reachable laser parameters (pulse repetition rate and energy, number of pulses per burst notably). This flexibility allowed us to perform a thorough study of the GHz-ablation regime by numerous machining experiments on several materials of industrial interest. This study points out the influence of the different laser parameters and thus to explain the variety of results related to GHz-ablation and to guide the use of this regime under favorable conditions to reach an efficient and high-quality machining
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Wu, Qian-Ying, et 吳芊縈. « Using a grating-coupled passively mode-locked quantum-dot laser to achieve a low repetition-rate and wavelength-tunable ultrashort pulse source at 1.3μm range ». Thesis, 2013. http://ndltd.ncl.edu.tw/handle/gy745r.

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碩士
國立交通大學
電子工程學系 電子研究所
102
In this thesis, an external grating-coupled two-section J-shape waveguide quantum dot device was used as a multi-functional light source. The wavelength tuning range was over 140nm in 1.3 μm range when the two sections were shorted and in the same forward bias. The lasing wavelength can be continuously tuned from the ground state to the excited state of the quantum dots, while the linewidth was smaller than 0.1 nm, and the side mode suppression ratio (SMSR) is about 40 dB. When one of the two sections was reversely biased as a saturable absorber, the laser was passively mode-locked. The tuning range of the lasing wavelength was about 33 nm and 30 nm for the ground state and the excited state, respectively. The pulsewidth depended on the injection current and the absorber bias and was varied from 10 ps to 30 ps. With changing the length of the external cavity, the repetition rate was continuously tuned from 2 GHz to 87.2 MHz. To the best of our knowledge, the repetition rate of 87.2 MHz was the lowest frequency achieved to date for any passively mode-locked semiconductor laser, which can make major contribution to medical and bio-imaging applications.
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Chapitres de livres sur le sujet "Gigahertz repetition rate laser source"

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Turcu, I. C. E., G. J. Tallents, M. S. Schulz et A. G. Michette. « High Repetition Rate Laser-Plasma X-Ray Source for Microscopy ». Dans X-Ray Microscopy III, 54–57. Berlin, Heidelberg : Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-540-46887-5_9.

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Egbert, A., B. Mader, B. Tkachenko, C. Fallnich et B. N. Chichkov. « Compact ultrashort hard-x-ray source driven by high-repetition rate femtosecond laser pulses ». Dans Ultrafast Phenomena XIII, 137–39. Berlin, Heidelberg : Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-59319-2_42.

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Zhavoronkov, N., Y. Gritsai, P. Mikheev, A. Savelev, R. Bernath, G. Korn et T. Elsaesser. « High Repetition Rate Femtosecond Laser Driven Hard X-Ray Source and its Application for Diffraction Experiments ». Dans Springer Series in OPTICAL SCIENCES, 325–28. New York, NY : Springer New York, 2004. http://dx.doi.org/10.1007/978-0-387-34756-1_41.

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Hada, Masaki, et Jiro Matsuo. « Development of Ultrafast Pulse X-ray Source in Ambient Pressure with a Millijoule High Repetition Rate Femtosecond Laser ». Dans Zero-Carbon Energy Kyoto 2009, 300–305. Tokyo : Springer Japan, 2010. http://dx.doi.org/10.1007/978-4-431-99779-5_47.

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Actes de conférences sur le sujet "Gigahertz repetition rate laser source"

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Wang, Yan, Yizhou Liu, Zhigang Zhang et Franz X. Kartner. « 97-Watt, 1.08-Gigahertz repetition rate, Femtosecond Yb:fiber Laser Source ». Dans Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C. : OSA, 2020. http://dx.doi.org/10.1364/cleopr.2020.c2a_2.

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Li, Duo, Umit Demirbas, Jonathan R. Birge, Gale S. Petrich, Leslie A. Kolodziejski, Alphan Sennaroglu, Franz X. Kärtner et James G. Fujimoto. « Diode-pumped Gigahertz Repetition Rate Femtosecond Cr:LiSAF Laser ». Dans Conference on Lasers and Electro-Optics. Washington, D.C. : OSA, 2010. http://dx.doi.org/10.1364/cleo.2010.ctuk3.

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WANG, HE, Yiming Xu, Stefan Ulonska, Predrag Ranitovic et Robert A. Kaindl. « High repetition-rate XUV source for ultrafast photoemission ». Dans Laser Science. Washington, D.C. : OSA, 2013. http://dx.doi.org/10.1364/ls.2013.lth1i.2.

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Chan, Tian Seng, M. H. A. Wahid et P. Poopalan. « Gigahertz repetition rate ultrashort laser pulses from coherent external Fabry-Pérot cavity ». Dans THE 2ND INTERNATIONAL CONFERENCE ON APPLIED PHOTONICS AND ELECTRONICS 2019 (InCAPE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/1.5142117.

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Chernikov, S. V., J. R. Taylor, P. V. Mamyshev et E. M. Dianov. « Generation of a Soliton Pulse Train in an Optical Fibre Using Two Cw, Single-Frequency, Diode Lasers ». Dans International Conference on Ultrafast Phenomena. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/up.1992.thc8.

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The potential application in fibre optical communication systems has stimulated research into high repetition rate sources of solitons. Several schemes have been suggested, see for example the references quoted in [1]. One such method proposed the use of the cw beat signal derived from two frequencies for the generation of a cw train of solitons at repetition frequencies in the Gigahertz regime [1,2]. The transformation of the beat signal into a train of solitons results from the nonlinear propagation in an optical fibre exhibiting a slow amplification or decreasing dispersion along the length. The combined effect of the self-phase modulation and group velocity dispersion, influenced by weak amplification or the decreasing dispersion of the fibre leads to a reshaping of the sinusoidal beat signal into solitons and to pulse compression, with the repetition frequency of the generated soliton pulse train equal to the frequency difference between the two input modes. Theoretical analysis has shown that using this technique, a cw train of high quality, well separated solitons can be generated with negligible pedestal component.
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Hamrouni, Marin, François Labaye, Norbert Modsching, Valentin J. Wittwer et Thomas Südmeyer. « Powerful Sub-100-fs Diode-Pumped Solid-State Laser Oscillator Operating at Gigahertz Repetition Rate ». Dans CLEO : Science and Innovations. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_si.2022.sf4e.3.

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Our Kerr-lens mode-locked Yb:CALGO laser oscillator generates 93-fs pulses in 6.9-W and 48-fs pulses in 4.1-W at 1-GHz repetition rate. These are the shortest pulse duration and highest average power of any GHz-class Yb-based oscillator.
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Golz, Torsten, Gregor Indorf, Mihail Petev, Jan-Heye Buss, Jan-C. Deinert, Ivanka Grguras, Michael Schulz et Robert Riedel. « High repetition rate extreme ultraviolet source and Terahertz driver laser ». Dans CLEO : Science and Innovations. Washington, D.C. : OSA, 2021. http://dx.doi.org/10.1364/cleo_si.2021.sth2b.4.

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Anderson, T., I. V. Tomov et P. M. Rentzepis. « High repetition rate picosecond x-ray source ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.mp5.

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Picosecond Kα x-ray pulses are produced at a repetition rate of 300 Hz from an x-ray diode via laser-driven photo emission by picosecond ultraviolet laser pulses. Deep UV radiation is used to maximize the quantum yield from photoemission from an aluminum cathode. The laser system is based on ArF excimer amplification of picosecond seed pulses of 193 nm radiation generated by sum frequency generation in BBO. Picosecond pulses from a cw mode-locked Nd:YLF laser are frequency doubled to pump a dye laser at 728 nm and also used to seed a Nd:YLF regenerative amplifier. Non-linear upconversion in a series of BBO crystals provides 193 nm seed pulses of duration less than 10 ps with energies of 1–3 μj at a repetition rate of 300 Hz. An ArF excimer discharge is used to amplify these pulses to 1–2 mJ energies. The intense picosecond UV radiation illuminates an aluminum photocathode to produce electron bunches that are accelerated across a diode gap of 1 cm and 75 kV to impact a copper target and generate characteristic hard x-ray pulses at 1.5 Å with a duration of less than 30 ps. The spatial and temporal characteristics of the x-ray source as well as results from time-resolved x-ray studies of solid surfaces will be presented.
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Sheng, W. D., X. F. Li, H. W. Liu, X. J. Fang et J. Q. Yao. « High Repetition Rate LDP-SHG Nd:YAG Laser ». Dans Solid State Lasers : Materials and Applications. Washington, D.C. : Optica Publishing Group, 1997. http://dx.doi.org/10.1364/sslma.1997.tuc4.

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The second harmonic of Nd:YAG laser with short output wavelengths is interesting for applications in optical data storage and laser-printer technology. High repetition rate green laser source also can be used to high speed scanning imaging and pumping tunable laser. Intracavity doubling in diode-pumped solid state lasers seem to be a promising approach for frequency doubling. One advantage with this configuration is that the difficulties with the narrow acceptance bandwidth of the nonlinear material can be half than in external frequency doubling.
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Natile, Michele, Anna Golinelli, Florent Guichard, Marc Hanna, Yoann Zaouter, Ronic Chiche et Patrick Georges. « High repetition rate CEP-stable Yb-doped laser source for attoscience ». Dans High Intensity Lasers and High Field Phenomena. Washington, D.C. : OSA, 2020. http://dx.doi.org/10.1364/hilas.2020.hf1b.4.

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Rapports d'organisations sur le sujet "Gigahertz repetition rate laser source"

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Anderson, Scott L. DURIP 99 High Repetition Rate Laser Vaporization Source for Cluster Ion Beam Deposition. Fort Belvoir, VA : Defense Technical Information Center, août 2000. http://dx.doi.org/10.21236/ada381571.

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Bayramian, A. High Energy Repetition-Rate Average-Power Laser Driver (HERALD) for the Dynamic Compression Sector (DCS) at the Advanced Photon Source (APS). Office of Scientific and Technical Information (OSTI), juin 2013. http://dx.doi.org/10.2172/1088458.

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MacDonald, James D., Aharon Abeliovich, Manuel C. Lagunas-Solar, David Faiman et John Kabshima. Treatment of Irrigation Effluent Water to Reduce Nitrogenous Contaminants and Plant Pathogens. United States Department of Agriculture, juillet 1993. http://dx.doi.org/10.32747/1993.7568092.bard.

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The contamination of surface and subterranean drinking water supplies with nitrogen-laden agricultural wastewater is a problem of increasing concern in the U.S. and Israel. Through this research, we found that bacteria could utilize common organic wastes (e.g. paper, straw, cotton) as carbon sources under anaerobic conditions, and reduce nitrate concentrations in wastewater to safe levels. Two species of bacteria, Cellulomonas uda and a Comamonas sp., were required for dentitrification. Celulomonas uda degraded cellulose and reduced nitrate to nitrite. In addition, it excreted soluble organic carbon needed as a food source by the Comamonas sp. for completion of denitrification. We also found that recirculated irrigation water contains substantial amounts of fungal inoculum, and that irrigating healthy plants with such water leads to significant levels of root infection. Water can be disinfected with UV, but our experiments showed that Hg-vapor lamps do not possess sufficient energy to kill spores in wastewater containing dissolved organics. Excimer lasers and Xenon flashlamps do possess the needed power levels, but only the laser had a high enough repetition rate to reliably treat large volumes of water. Ozone was highly efficacious, but it's use as a water treatment is probably best suited to moderate or low volume irrigation systems. This research provides critical data needed for the design of effective water denitrification and/or pathogen disinfection systems for different growing operations.
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