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Статті в журналах з теми "Laser intensity noise"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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1

Luo, Cheng-Jhih, and Yinchieh Lai. "Relative Intensity Noise of Hybrid Mode-Locked Bound Soliton Fiber Laser: Theory and Experiment." Applied Sciences 8, no. 9 (August 24, 2018): 1451. http://dx.doi.org/10.3390/app8091451.

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Анотація:

Relative intensity noises (RIN) of mode-locked lasers are properties which are crucial for applications. In the literature, there have been plenty of theoretical/experimental studies on the RIN noises of passive/active single-pulse mode-locked lasers. Since some mode-locked lasers can also be operated under the bound-pulse mode-locking state, it is thus very interesting to further examine the RIN properties under bound-pulse mode-locking, and to verify if there are possibilities for RIN noise reduction as predicted by some previous theoretical works. The conventional analytical formula based on the soliton perturbation theory can no longer be applied due to the pulse shape complexity for the bound-pulse mode-locking cases. New theoretical tools for modelling general mode-locked lasers are eagerly awaited. In the present work, the RIN noises of an environmentally stable 10 GHz hybrid mode-locked Er-doped fiber laser capable of bound-soliton generation are experimentally investigated, and a novel theoretical method based on the linearized backpropagation approach is theoretically developed for calculating the RIN noise spectra of general mode-locked lasers. Both the theoretical and experimental results demonstrate that the RIN noise of the bound-soliton state can be lower than that of the single-soliton state by following the laser power scaling tendency.

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2

Nocera, F. "LIGO laser intensity noise suppression." Classical and Quantum Gravity 21, no. 5 (February 3, 2004): S481—S485. http://dx.doi.org/10.1088/0264-9381/21/5/014.

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3

Ahmed, Moustafa. "Theoretical Modeling of Intensity Noise in InGaN Semiconductor Lasers." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/475423.

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This paper introduces modeling and simulation of the noise properties of the blue-violet InGaN laser diodes. The noise is described in terms of the spectral properties of the relative intensity noise (RIN). We examine the validity of the present noise modeling by comparing the simulated results with the experimental measurements available in literature. We also compare the obtained noise results with those of AlGaAs lasers. Also, we examine the influence of gain suppression on the quantum RIN. In addition, we examine the changes in the RIN level when describing the gain suppression by the case of inhomogeneous spectral broadening. The results show that RIN of the InGaN laser is nearly 9 dB higher than that of the AlGaAs laser.

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4

Buchler, Ben C., Elanor H. Huntington, Charles C. Harb, and Timothy C. Ralph. "Feedback control of laser intensity noise." Physical Review A 57, no. 2 (February 1, 1998): 1286–94. http://dx.doi.org/10.1103/physreva.57.1286.

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5

Nguyen, Anh-Hang, and Hyuk-Kee Sung. "Improving the Performance of Optical Phased Array by Reducing Relative Intensity Noise of Optically Injection-Locked Laser Array." Photonics 9, no. 11 (November 17, 2022): 868. http://dx.doi.org/10.3390/photonics9110868.

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Relative intensity noise (RIN) is an important factor that determines the performance of optical phased arrays (OPA) that are configured using semiconductor lasers as light emission sources. This study proposes a method of improving the optical signal-to-noise ratio (OSNR) of an OPA by reducing the RIN and using high coherence of optically injection-locked (OIL) laser arrays. We numerically demonstrated a laser RIN reduction of 22.7 dB by the OIL laser compared to a free-running laser. We achieved an OPA RIN reduction of 13.2 dB by combining the coherent outputs with the uncorrelated noise of 21 OIL lasers, compared to a single OIL laser RIN. Consequently, we demonstrated an OPA OSNR increase of approximately 13.8 dB based on the OIL-based OPA compared to that of the conventional noise-correlated OPA configuration. Additionally, we confirmed the maintenance of OPA OSNR improvement during OPA operations.

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6

Wang, Jiaqi, Haosen Shi, Chunze Wang, Minglie Hu, and Youjian Song. "Impact of Laser Intensity Noise on Dual-Comb Absolute Ranging Precision." Sensors 22, no. 15 (August 2, 2022): 5770. http://dx.doi.org/10.3390/s22155770.

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Noise in mode-locked lasers has been a central issue for dual-comb metrological applications. In this work, we investigate the laser intensity noise on dual-comb absolute ranging precision. Two different dual-comb schemes based on linear optical sampling (LOS) and nonlinear asynchronous optical sampling (ASOPS) have been constructed. In the LOS scheme, the ranging precision deteriorates with the increase in laser relative intensity noise (RIN). This effect can be corrected by implementing a balanced photo-detection (BPD). In the ASOPS scheme, the experiment shows that the conversion from laser RIN to dual-comb ranging precision is negligible, making a balanced detection unnecessary for ranging precision improvement. The different manners of RIN’s impact on absolute ranging precision are attributed to the distinct cross-correlation signal patterns and the underlying time-of-flight (TOF) extraction algorithms.

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7

GIACOBINO, E., F. MARIN, A. BRAMATI, and V. JOST. "QUANTUM NOISE REDUCTION IN LASERS." Journal of Nonlinear Optical Physics & Materials 05, no. 04 (October 1996): 863–77. http://dx.doi.org/10.1142/s0218863596000611.

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The intensity noise of semiconductor lasers was brought below shot noise by about 30% using constant current supply together with line narrowing techniques. This result is shown to be in good agreement with theoretical predictions of a laser theory including regulated pumping. The latter theory is applied to the case of Nd:YVO 4 microlasers pumped by the sub-shot noise semiconductor lasers.

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8

Pillai, R., E. Garmire, and P. Menendez-Valdes. "Relative intensity noise of laser-diode arrays." IEEE Photonics Technology Letters 3, no. 11 (November 1991): 968–70. http://dx.doi.org/10.1109/68.97829.

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9

Poëtte, J., S. Blin, G. Brochu, L. Bramerie, R. Slavík, J. C. Simon, S. LaRochelle, and P. Besnard. "Relative intensity noise of multiwavelength fibre laser." Electronics Letters 40, no. 12 (2004): 724. http://dx.doi.org/10.1049/el:20040539.

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10

Xiao Nan Hu, Tao Liu, Yu Lian Cao, Bo Meng, Hong Wang, Geok Ing Ng, Xian Shu Luo, et al. "Relative Intensity Noise of Silicon Hybrid Laser." IEEE Journal of Quantum Electronics 50, no. 6 (June 2014): 466–73. http://dx.doi.org/10.1109/jqe.2014.2315212.

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11

Wölfl, F., J. F. Ryan, A. M. Fox, A. D. Ashmore, D. J. Mowbray, M. S. Skolnick, M. Hopkinson, and G. Hill. "Intensity noise in quantum-dot laser diodes." Applied Physics Letters 78, no. 23 (June 4, 2001): 3577–79. http://dx.doi.org/10.1063/1.1377045.

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12

Ivanov, E. "Wide-band suppression of laser intensity noise." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 56, no. 1 (January 2009): 22–26. http://dx.doi.org/10.1109/tuffc.2009.1001.

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13

CHENG, QING-HUA, DA-HAI XU, LI CAO, and DA-JIN WU. "THE INTENSITY CORRELATION TIME OF A SINGLE-MODE LASER DRIVEN BY BOTH COLORED PUMP NOISE WITH SIGNAL MODULATION AND QUANTUM NOISE WITH CROSS-CORRELATION BETWEEN ITS REAL AND IMAGINARY PARTS." Modern Physics Letters B 20, no. 29 (December 20, 2006): 1867–78. http://dx.doi.org/10.1142/s0217984906012109.

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Using linear approximation method, we calculate the intensity correlation time of a single-mode laser driven by both colored pump noise with signal modulation and quantum noise with cross-correlation between its real and imaginary parts, and analyze the influence of the signal, noise and its cross-correlation form on the statistical fluctuation of the laser system. We detect that the "color" of pump noise is an important factor that affects the statistical fluctuation of the laser system. When the colored pump noise is short time correlation, within a determinate parameter range, the intensity correlation time can be prolonged, and the statistical fluctuation of the laser system can be restrained by increasing the amplitude of modulation signal. The specific frequency of input signal will result in intensity correlation time to appear maximum, and the statistical fluctuation of the laser system is least here. When the colored pump noise is long time correlation, within a determinate parameter range, the intensity correlation time can be also prolonged by increasing the frequency of modulation signal and decreasing its amplitude, and the statistical fluctuation of the laser system will decrease. In particular, when the intensity of quantum noise increases and the cross-correlation between its real and imaginary parts enhance, the intensity correlation time will prolong, and the statistical fluctuation of the laser system is restrained.

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14

Leonov S. O., Frolov M. P., Korostelin Yu. V., Skasyrsky Ya. K., Fjodorow P. Yu., Shelkovnikov A. S., Kozlovsky V. I., Kireev A. N., and Gubin M. A. "Intensity noise and pulse repetition frequency stability measurements of a passive mode-locked Cr:ZnSe laser." Optics and Spectroscopy 130, no. 4 (2022): 446. http://dx.doi.org/10.21883/eos.2022.04.53734.51-21.

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Анотація:

The results on intensity noise and repetition frequency stability measurements for a passively mode-locked Cr : ZnSe laser pumped by a thulium-doped fiber laser at a wavelength of 1.94 μm are presented. The stability parameters and intensity noise are compared for three different generation regimes of the Cr:ZnSe laser. The laser operated at a repetition rate of 129.5 MHz and a central wavelength of 2.45 μm. Keywords: optical frequency comb, mode-locking, relative intensity noise, repetition frequency stability.

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15

Tran, Chieu D., and Ricardo J. Furlan. "Indirect Amplitude Stabilization of a Tunable Laser through Control of the Intensity of a Pump Laser by an Electro-Optic Modulator." Applied Spectroscopy 47, no. 2 (February 1993): 235–38. http://dx.doi.org/10.1366/0003702934048172.

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A novel method has been developed to stabilize the intensity of a tunable laser. In this method, the tunable laser is amplitude-stabilized indirectly by controlling the intensity of the pump laser through an electro-optic modulator placed between the pump and the tunable lasers. A small portion of the tunable laser beam was split into a reference photodiode to provide a reference signal for the feedback driver to drive the Pockels cell. Any fluctuation in the intensity of the tunable laser is compensated for by varying the intensity of the pump laser through the feedback driven Pockels cell. Results obtained on the Ti-sapphire laser pumped by an ion laser demonstrate that up to 100 × reduction in the laser noise level can be accomplished by use of this method. Furthermore, with this method, it is possible to adjust the intensity of the laser to be exactly equal for different wavelengths, and to maintain this level for as long as the stabilization is activated. Applications of this method for different types of tunable lasers, including dye and F-center lasers, are discussed.

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16

Kassa, Wosen-Eshetu, Anne-Laure Billabert, Salim Faci, and Catherine Algani. "Simulation of heterodyne RoF systems based on 2 DFB lasers: application to an optical phase-locked loop design." International Journal of Microwave and Wireless Technologies 6, no. 2 (February 19, 2014): 207–11. http://dx.doi.org/10.1017/s1759078714000117.

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This paper presents a simulation approach of optical heterodyne systems by using the equivalent circuit representation of a distributed feedback laser (DFB) in the electrical domain. Since the electrical representation of the DFB laser is developed from the rate equations, its characteristics such as non-linearity, relative intensity noise (RIN), and phase noise can be predicted precisely for various biasing conditions. The model is integrated in a heterodyne radio over fiber (RoF) system where two DFB lasers are used to generate a millimeter-wave (mm-wave) signal. An optical phase-locked loop is also introduced to reduce the phase noise on the mm-wave signal. The optical phase noise contribution of individual lasers to the mm-wave signal is evaluated and compared with theoretical results. It is shown that the phase noise of the mm-wave is reduced considerably depending on the loop bandwidth and propagation delay. With the circuit simulation approach proposed, optical and mm-wave phase noises can be studied together with other circuit environments such as parasitic effects and driver circuits.

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17

In, Jung-Hwan, Chan-Kyu Kim, and Sungho Jeong. "Analysis of relative standard deviation of spectral line intensity and intensity ratio in laser-induced breakdown spectroscopy using CuIn1−xGaxSe2 thin film samples." Journal of Analytical Atomic Spectrometry 30, no. 10 (2015): 2107–19. http://dx.doi.org/10.1039/c5ja00139k.

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The precision of laser induced breakdown spectroscopy (LIBS) measurement is analyzed in consideration of both the shot noise of the detector and the shot-to-shot fluctuation noise of the laser plasma.

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18

ZHU, PING, and YI JIE ZHU. "STATISTICAL PROPERTIES OF INTENSITY FLUCTUATION OF SATURATION LASER MODEL DRIVEN BY CROSS-CORRELATED ADDITIVE AND MULTIPLICATIVE NOISES." International Journal of Modern Physics B 24, no. 14 (June 10, 2010): 2175–88. http://dx.doi.org/10.1142/s0217979210055755.

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Statistical properties of the intensity fluctuation of a saturation laser model driven by cross-correlation additive and multiplicative noises are investigated. Using the Novikov theorem and the projection operator method, we obtain the analytic expressions of the stationary probability distribution Pst(I), the relaxation time Tc, and the normalized variance λ2(0) of the system. By numerical computation, we discussed the effects of the cross-correlation strength λ, the cross-correlation time τ, the quantum noise intensity D, and the pump noise intensity Q for the fluctuation of the laser intensity. Above the threshold, λ weakens the stationary probability distribution, speeds up the startup velocity of the laser system from start status to steady work, and attenuates the stability of laser intensity output; however, τ strengthens the stationary probability distribution and strengths the stability of laser intensity output; when λ < 0, τ speeds up the startup; on the contrast, when λ > 0, τ slows down the startup. D and Q make the relaxation time exhibit extremum structure, that is, the startup time possesses the least values. At the threshold, τ cannot generate the effects for the saturation laser system, λ expedites the startup velocity and weakens the stability of laser intensity output. Below threshold, the effects of λ and τ not only relate to λ and τ, but also relate to other parameters of the system.

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19

Tsubono, Kimio, and Shigenori Moriwaki. "Shot-Noise Limited Low-Frequency Intensity Noise of a Nd:YAG Laser." Japanese Journal of Applied Physics 31, Part 1, No. 4 (April 15, 1992): 1241–42. http://dx.doi.org/10.1143/jjap.31.1241.

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20

Ngo, Hai Long, Hoang Dat Luu, Dinh Chi Tran, Viet Hoang Do, Van Binh Le, Khac Thien Cao, and Quoc Tuan Banh. "Research and development of 40 GHz bandwidth laser relative intensity noise measurement system using PID controller and ESA spectrum analyser." Ministry of Science and Technology, Vietnam 64, no. 10 (October 12, 2022): 38–42. http://dx.doi.org/10.31276/vjst.64(10db).38-42.

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Measuring and evaluating the quality of laser sources used in optical communications and in the precision measurement system is essential. Relative intensity noise (RIN) is a parameter that directly affects the system quality. Therefore, RIN needs to be measured periodically. This study presents a high-sensitivity, broadband (40 GHz) RIN measurement system using a precisely temperature-controlled photodetector and an electrical spectrum signal analyser. RIN value is determined through indirect measurement of noise components: thermal noise, total detected noise, and the shot noise of the laser source. These noises are measured by using an Electrical spectrum analyser (ESA) and a super sensitive 61/2 digital multimeter (DMM). The experimental results of the RIN measurement of the reference Distributed feedback (DFB) laser source show the similarity between the RIN value measured by the system and the RIN value provided by the manufacturer.

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21

Yang, Huiqi, Hailong Wang, Jiaqi Song, Pixian Jin, Xiaodong Xu, Jun Xu, and Huadong Lu. "Low-intensity-noise single-frequency CW 1080 nm laser by employing a laser crystal with the small stimulated-emission cross section." Laser Physics Letters 19, no. 5 (March 21, 2022): 055801. http://dx.doi.org/10.1088/1612-202x/ac5b5d.

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Abstract An effective approach to obtain a single-frequency laser with low intensity noise is presented in this paper, which is implemented by employing a gain medium with the small stimulated-emission cross section (SECS). When the adopted Nd:YAP (Nd:YAlO3) gain medium with SECS of 4.6×10−19 cm2 is replaced by Nd:CYA (Nd:CaYAlO4) gain medium with SECS of 1.04×10−19 cm2, the frequency of measured intensity noise reached shot noise limit obviously reduces from 2.49 to 1.5 MHz, which agrees well with the theoretical predictions. On this basis, a single-frequency continuous-wave (CW) Nd:CYA laser with low intensity noise is first achieved. The attained output power of the Nd:CYA laser is 1.12 W. The achieved single-frequency CW 1080 nm laser will satisfy the requirements of the squeezed and entangled light generation.

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22

Ranjan, Rajeev, Giovanni Costa, Maria Antonietta Ferrara, Mario Sansone, and Luigi Sirleto. "Noise Measurements and Noise Statistical Properties Investigations in a Stimulated Raman Scattering Microscope Based on Three Femtoseconds Laser Sources." Photonics 9, no. 12 (November 28, 2022): 910. http://dx.doi.org/10.3390/photonics9120910.

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To induce a Raman-active transition in a material, stimulated Raman scattering (SRS) spectroscopy/microscopy implementations typically rely on two pulsed laser sources. One of their limitations is that not all of the regions of Raman spectra can be investigated, so only some applications can be exploited. In this paper, the noise characterizations of a stimulated Raman scattering spectroscopy/microscopy implementation, based on the insertion of a third pulsed laser source, are provided. The merit of this system is that it is able to explore the large variety of SRS applications. In order to characterize our system, an investigation of different kinds of noises due to the laser sources and electronics sources was carried out. Firstly, the relative intensity noises of three femtosecond laser sources were measured. Secondly, noise characterizations of the detection system were carried out and our findings prove that our SRS microscope is shot noise-limited, demonstrating that the third laser source introduction is well suited and satisfies our purpose. Finally, the statistical properties of the overall image noises are analyzed and discussed.

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23

Morito, Ken, Fumio Koyama, and Kenichi Iga. "Intensity Noise of GaAlAs / GaAs Surface Emitting Laser." Japanese Journal of Applied Physics 29, Part 1, No. 2 (February 20, 1990): 299–300. http://dx.doi.org/10.1143/jjap.29.299.

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24

Rza̧źewski, Kazimierz, Bryan Stone, and Martin Wilkens. "Laser-noise-induced intensity fluctuations in resonance fluorescence." Physical Review A 40, no. 5 (September 1, 1989): 2788–91. http://dx.doi.org/10.1103/physreva.40.2788.

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25

Goobar, E., J. W. Scott, B. Thibeault, G. Robinson, Y. Akulova, and L. A. Coldren. "Calibrated intensity noise measurements in microcavity laser diodes." Applied Physics Letters 67, no. 25 (December 18, 1995): 3697–99. http://dx.doi.org/10.1063/1.115353.

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26

Tan, F., M. K. Wu, M. Liu, M. Feng, and N. Holonyak. "Relative intensity noise in high speed microcavity laser." Applied Physics Letters 103, no. 14 (September 30, 2013): 141116. http://dx.doi.org/10.1063/1.4824360.

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27

Foster, G. T., S. L. Mielke, and L. A. Orozco. "Intensity correlations of a noise-driven diode laser." Journal of the Optical Society of America B 15, no. 11 (November 1, 1998): 2646. http://dx.doi.org/10.1364/josab.15.002646.

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28

Kitaoka, Y., H. Sato, K. Mizuuchi, K. Yamamoto, and M. Kato. "Intensity noise of laser diodes with optical feedback." IEEE Journal of Quantum Electronics 32, no. 5 (May 1996): 822–28. http://dx.doi.org/10.1109/3.493006.

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29

Леонов, С. О., М. П. Фролов, Ю. В. Коростелин, Я. К. Скасырский, П. Ю. Федоров, А. С. Шелковников, В. И. Козловский, А. Н. Киреев та М. А. Губин. "Измерение шумов интенсивности и стабильности частоты повторения импульсов Сr:ZnSe-лазера с пассивной синхронизацией мод". Оптика и спектроскопия 130, № 4 (2022): 564. http://dx.doi.org/10.21883/os.2022.04.52274.51-21.

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Анотація:

The results on intensity noise and repetition frequency stability measurements for a passive mode-locked Cr:ZnSe laser pumped by a thulium-doped fiber laser at a wavelength of 1.94 µm are presented. The stability parameters and intensity noise are compared for three different generation regimes of the Cr:ZnSe laser. The laser operated at a repetition rate of 129.5 MHz and a central wavelength of 2.45 µm.

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30

Xue, Yongjun, and Edward S. Yeung. "Laser-Based Ultraviolet Absorption Detection in Capillary Electrophoresis." Applied Spectroscopy 48, no. 4 (April 1994): 502–6. http://dx.doi.org/10.1366/000370294775268983.

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Анотація:

Laser-based UV absorption in capillary electrophoresis is demonstrated. The use of vacuum photodiodes and an all-electronic noise canceller provides adequate baseline stability despite the large inherent intensity noise in UV lasers. A 4-fold improvement in the detection limit is achieved in comparison to that of commercial instruments. The main advantage here is the better optical coupling with small capillary tubes, maximizing the available optical pathlength for absorption.

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31

Vaezi-Nejad, SM, M. Cox, and N. Cooper. "Novel instrumentation for measurement of relative intensity noise." Transactions of the Institute of Measurement and Control 34, no. 4 (April 15, 2011): 477–86. http://dx.doi.org/10.1177/0142331211399330.

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Анотація:

Laser diode relative intensity noise (RIN) metrology capabilities have been developed and demonstrated, providing significantly improved sensitivity and accuracy compared with existing methods. The novel use of the demonstrated reference noise source has shown significant advantages, achieving improved sensitivity, reducing measurement accuracy as low as ±1 dB and simplifying the system calibration methodology, thus improving flexibility. Laser RINs of between 10 and 14 dB below the shot RIN have been shown (typically −170 dBm/Hz), which is a direct result of the improved system sensitivity. A neodinium yag 1319-nm ring laser provided a ‘cold’ reference source, in a similar manner to that used in RF electrical metrology. Application of the ‘flat’ low noise optical RF noise source from 10 MHz to 20 GHz has been demonstrated for the first time in optical RF metrology, providing a calculable reference traceable via the incident optical power received. Because of the simplistic nature of this approach, system calibration can be performed for each RIN measurement that is carried out, reducing measurement uncertainty associated with RF mismatch, system linearity and loss. High specification components have been assessed individually and in the combined system indicating an overall system noise figure of 2–3 dB over the 10 MHz to 20 GHz frequency range (−171 to −172 dBm), some 4–5 dB better than previously reported.

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32

Liu, Bin, Yangfan Jiang, and Haining Ji. "Sensing by Dynamics of Lasers with External Optical Feedback: A Review." Photonics 9, no. 7 (June 27, 2022): 450. http://dx.doi.org/10.3390/photonics9070450.

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Анотація:

External optical feedback (EOF) has great impacts on the properties of lasers. It influences the stable operation of lasers. However, various applications based on lasers with EOF have been developed. One typical example is self-mixing interferometry technology, where modulated steady-state laser intensity is utilized for sensing and measurement. Other works show that laser dynamics can also be used for sensing, and the laser in this case is more sensitive to EOF. This paper reviews the sensing technology that uses the dynamics of lasers with EOF. We firstly introduce the basic operating principles of a laser with EOF and discuss the noise properties of and intensity modification in lasers induced by EOF. Then, sensing applications using laser dynamics are categorized and presented, including sensing by frequency-shifted optical feedback, relaxation oscillation frequency, and dynamics with self-mixing interferometry signals and laser optical chaos. Lastly, we present an analysis of the transient response waveform and spectrum of a laser with EOF, showing its potential for sensing.

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33

Yan, Xu Dong, and De Yi Chen. "The Stochastic Resonance of the Single-Mode Laser with the Color Noises Correlation Period Modulation and Signal Modulation." Materials Science Forum 663-665 (November 2010): 1260–63. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.1260.

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The stochastic resonance of the laser systems which the color noise correlation intensity is modulated by the time period and the noise is modulated by the signal is investigated. By means of the linear approximation method, we calculate the signal-noise ratio of the laser intensity. We discuss the influence of the noise to the evolution of the signal-noise ratio with the noise self-correlation time, and discuss the influence of the signal modulation frequency to the evolution of the signal-noise ratio with the pump noise self-correlation time. It is found that the quantum noise and pump noise present different influence, the influence of the signal modulation frequency is interrelated with the time period modulation frequency.

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34

Harb, Charles C., Timothy C. Ralph, Elanor H. Huntington, David E. McClelland, Hans-A. Bachor, and Ingo Freitag. "Intensity-noise dependence of Nd:YAG lasers on their diode-laser pump source." Journal of the Optical Society of America B 14, no. 11 (November 1, 1997): 2936. http://dx.doi.org/10.1364/josab.14.002936.

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35

Dai, Gaoyu, Chee Seong Goh, and Yasuyuki Ozeki. "Low-intensity-noise wavelength-tunable picosecond Yb fiber laser." Japanese Journal of Applied Physics 60, no. 8 (August 1, 2021): 080902. http://dx.doi.org/10.35848/1347-4065/ac17db.

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36

Tan, F., R. Bambery, M. Feng, and N. Holonyak. "Relative intensity noise of a quantum well transistor laser." Applied Physics Letters 101, no. 15 (October 8, 2012): 151118. http://dx.doi.org/10.1063/1.4760225.

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37

Sebastian, Ananthu, Irina V. Balakireva, Schadrac Fresnel, Stéphane Trebaol, and Pascal Besnard. "Relative intensity noise in a multi-Stokes Brillouin laser." Optics Express 26, no. 26 (December 11, 2018): 33700. http://dx.doi.org/10.1364/oe.26.033700.

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38

Ferguson, B. A., and D. S. Elliott. "Laser-noise-induced intensity fluctuations in an optical interferometer." Physical Review A 41, no. 11 (June 1, 1990): 6183–92. http://dx.doi.org/10.1103/physreva.41.6183.

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39

Cao, Chun Yan, Shui Dong Xiong, Zheng Liang Hu, and Yong Ming Hu. "Suppression of Double Rayleigh Scattering Induced Coherent Noise in a Remote Fiber Sensor System Using PGC Technique." Advanced Materials Research 571 (September 2012): 185–89. http://dx.doi.org/10.4028/www.scientific.net/amr.571.185.

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Double Rayleigh scattering (DRS) induces coherent noises in remotely interrogated optical fiber sensor systems especially when high coherence laser sources are used. Phase generation carried (PGC) technique has been used in optical fiber sensors to overcome bias induced signal fading and eliminated incoherent noises at low frequency. In this paper we demonstrated that PGC technique can also suppress DRS induced coherent noises. In an experimental setup with total 50-km input and output lead fibers, we achieved maximum 7dB of intensity noise suppression and maximum 10dB of phase noise suppression. With PGC technique, DRS induced phase noise has been suppressed to the sensor self-noise level.

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40

Su, Chang, A. A. Rangwala, and K. Wódkiewicz. "Laser-Phase-Noise-Induced Stochastic-Resonance Fluorescence." Zeitschrift für Naturforschung A 52, no. 1-2 (February 1, 1997): 127–29. http://dx.doi.org/10.1515/zna-1997-1-232.

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Abstract Stochastic fluctuations of coherent and incoherent components of the resonance fluorescence intensity induced by Wiener-Levy laser phase noise are investigated. Statistical properties of the atomic dipole moment and stochastic Mollow spectra of atomic dipole fluctuations for different values of the laser linewidth and Rabi frequency are calculated. It is shown that these spectra exhibit a triplet structure which is purely classical and entirely laser-noise dependent.

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41

LI, Y. H., C. S. MA, and D. C. MEI. "STATISTICAL FLUCTUATION IN A SATURATION LASER MODEL WITH CROSS-CORRELATIONS BETWEEN THE REAL AND IMAGINARY PARTS OF QUANTUM NOISE." International Journal of Modern Physics B 24, no. 24 (September 30, 2010): 4881–88. http://dx.doi.org/10.1142/s0217979210056888.

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We study the effects of cross-correlations between the real and imaginary parts of quantum noise on the intensity fluctuation of a saturation laser model. By virtue of the locked phase method,we derived an approximate Fokker–Planck equation and analytic expressions of the stationary probability distribution function (SPD) of the laser system. Based on the SPD, the mean, the normalized variance, and the normalized skewness of the steady-state laser intensity are calculated numerically. The results indicate that the correlation strength of the cross-correlations between the real and imaginary parts of quantum noise increases the intensity fluctuations.

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42

Wang, Xuan-Kai, Zhao-Yu Zhou, Meng-Da Li, Yong-Guang Zheng, Wei-Yong Zhang, Guo-Xian Su, Ming-Gen He, and Zhen-Sheng Yuan. "Low-noise and high-power second harmonic generation of 532 nm laser for trapping ultracold atoms." Review of Scientific Instruments 93, no. 12 (December 1, 2022): 123002. http://dx.doi.org/10.1063/5.0117561.

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Optical lattices for coherently manipulating ultracold atoms demand high-power, low-noise, narrow-line-width, and continuous-wave lasers. Here, we report the implementation of a 30 W 532 nm low-noise laser by second harmonic generation from a 1064 nm fiber laser, which is capable to generate optical lattices for a quantum gas microscope of [Formula: see text] atoms. The overall conversion efficiency is 59% at an input power of 51 W with a lithium triborate crystal coupled to a ring cavity. The relative intensity noise of the output laser is suppressed to −120 dBc/Hz in the range of 10 Hz–100 kHz with a high dynamic range of over 50 dB, which is suitable for long-term trapping and coherent manipulation of the quantum gases.

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43

Becher, C., E. Gehrig, and K. J. Boller. "Spectrally asymmetric mode correlation and intensity noise in pump-noise-suppressed laser diodes." Physical Review A 57, no. 5 (May 1, 1998): 3952–60. http://dx.doi.org/10.1103/physreva.57.3952.

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44

Jérémie, Francine, Jean-Luc Vey, and Philippe Gallion. "Optical corpuscular theory of semiconductor laser intensity noise and intensity squeezed-light generation." Journal of the Optical Society of America B 14, no. 2 (February 1, 1997): 250. http://dx.doi.org/10.1364/josab.14.000250.

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45

POETTE, JULIEN, PASCAL BESNARD, LAURENT BRAMERIE, and JEAN-CLAUDE SIMON. "HIGHLY SENSITIVE MEASUREMENT TECHNIQUE OF RELATIVE INTENSITY NOISE AND LASER CHARACTERIZATION." Fluctuation and Noise Letters 08, no. 01 (March 2008): L81—L86. http://dx.doi.org/10.1142/s0219477508004283.

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A sensitive technique to measure the relative intensity noise of a laser is described. Such experiment is a useful tool for laser characterizations, allowing direct measurement of physical parameters like relaxation oscillation frequencies and damping factor. Examples of determination of such parameters are given.

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46

Peng, Jiankang, Liufeng Li, and Lisheng Chen. "A spaceborne neodymium-doped yttrium aluminum garnet laser with nonplanar-ring-oscillator configuration." International Journal of Modern Physics A 36, no. 11n12 (March 22, 2021): 2140007. http://dx.doi.org/10.1142/s0217751x21400078.

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Due to their excellent noise performance and technical maturity, ultra-stable continuous-wave neodymium-doped yttrium aluminum garnet lasers are one of the major light sources in a series of precision measurements such as ground and space-based gravitational wave detection, inter-satellite laser ranging and coherent optical communication. As the first step of developing an ultra-stable spaceborne laser, we carried out the design, development and environmental test of an all-solid-state Nd:YAG NPRO spaceborne laser. The laser deliveries 11.48 mW of optical power at 1064.405 nm, exhibits intensity and frequency noises less than 1 × 10[Formula: see text]/[Formula: see text]Hz and 1 MHz/[Formula: see text]Hz (Fourier frequencies [Formula: see text] 10 mHz), respectively, passed environmental tests and has been onboard the first satellite of the Taiji program for one year. The work laid a solid foundation for realizing ultra-stable lasers for the Taiji program as well as being used in many space applications.

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47

SHERSTNEV, V. V., A. KRIER, A. G. BALANOV, N. B. JANSON, A. N. SILCHENKO, and P. V. E. McCLINTOCK. "MID-INFRARED LASING INDUCED BY NOISE." Fluctuation and Noise Letters 03, no. 01 (March 2003): L91—L95. http://dx.doi.org/10.1142/s0219477503001129.

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We demonstrate that external noise can play a constructive role in a laser diode, inducing coherent mid-infrared radiation. Depending on noise intensity, the induced lasing can be either unimode or mulitimode. The coherence of the radiation in each mode reaches its maximum at an optimal noise intensity that differs depending on the mode. The phenomenon can therefore be classified as a multiple coherence resonance.

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48

Bobrov, M. A., S. A. Blokhin, N. A. Maleev, A. A. Blokhin, A. P. Vasyl’ev, A. G. Kuzmenkov, V. M. Ustinov, I. I. Novikov, and L. Ya Karachinskii. "Intensity noise characteristics of intracavity contacted VCSELs with rhomboidal oxide current aperture for the magnetometric sensor with Cs¹³³ vapor cell used in magnetoencephalography." Journal of Physics: Conference Series 2103, no. 1 (November 1, 2021): 012182. http://dx.doi.org/10.1088/1742-6596/2103/1/012182.

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Abstract We demonstrate noise characterization of novel 894.4 nm vertical-cavity surface emitting lasers with intracavity contacts and a rhomboidal oxide current aperture (IC-VCSELs), dedicated to 133Cs D1 line compact optically pumped atomic magnetometers (OPM). The laser relative intensity noise, measured to be -139 dB/Hz at 10 kHz frequency in 1 Hz bandwidth for a laser optical power of 0.8 mW, is decreased with optical power growth. The IC-VCSELs polarization-resolved relative intensity noise is 143 dB/Hz at 10 kHz frequency in 1 Hz bandwidth for 0.8 mW. The emission linewidth of the VCSEL is about 55 MHz. The IC-VCSEL parameters are determined, such as emission linewidth ~ 50-60 MHz, optical power ~ 0.5-1.0 mW, at which the polarization-resolved RIN becomes close to the RIN, which makes it possible to use these lasers in various OPM Mz and Mx schemes. The ultimate sensitivity of OPM was estimated by the ratio of the magnetic resonance to the signal to noise level. It is shown that a OPM based on the IC-VCSELs, assuming magnetic resonance FWHM ~ 1 kHz, can achieve a shot noise-limited sensitivity around 20 fT in 1 Hz bandwidth without any polarization improvements by polarizer or polarization beam splitter cube (PBC). Developed IC-VCSELs is acceptable for use in compact OPM for magnetoencephalography.

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49

Bai, Lele, Xin Wen, Yulin Yang, Jun He, and Junmin Wang. "Laser Intensity Noise Suppression for Preparing Audio-Frequency Squeezed Vacuum State of Light." Applied Sciences 10, no. 4 (February 20, 2020): 1415. http://dx.doi.org/10.3390/app10041415.

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Laser intensity noise suppression has essential effects on preparation and characterization of the audio-frequency squeezed vacuum state of light based on a sub-threshold optical parametric oscillator (OPO). We have implemented two feedback loops by using relevant acousto-optical modulators (AOM) to stabilize the intensity of 795-nm near infrared (NIR) fundamental laser and 397.5-nm ultraviolet (UV) laser generated by cavity-enhanced frequency doubling. Typical peak-to-peak laser intensity fluctuation with a bandwidth of ~10 kHz in a half hour has been improved from ±7.45% to ±0.06% for 795-nm NIR laser beam, and from ±9.04% to ±0.05% for 397.5-nm UV laser beam, respectively. The squeezing level of the squeezed vacuum state at 795 nm prepared by the sub-threshold OPO with a PPKTP crystal has been improved from −3.3 to −4.0 dB around 3~9 kHz of analysis frequency range.

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50

NAGARAJAN, RADHAKRISHNAN, DANIEL TAUBER, and JOHN E. BOWERS. "HIGH SPEED SEMICONDUCTOR LASERS." International Journal of High Speed Electronics and Systems 05, no. 01 (March 1994): 1–44. http://dx.doi.org/10.1142/s0129156494000024.

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The strategy and methods to design high speed semiconductor lasers are reviewed here. The formalism for the analysis of intensity modulation, frequency modulation and intensity noise in quantum well lasers is first derived. Using this formalism the process of optimizing the laser structure for high speed operation is presented. In addition to the conventional factors such as the differential gain, photon density, photon lifetime and device parasitics, we also review the critical effects of carrier transport and microwave signal transmission on the dynamic characteristics and design of high speed semiconductor lasers.

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