Broad-bandwidth near-shot-noise-limited intensity noise suppression of a single-frequency fiber laser

Zhao, Qilai; Zhou, Kaijun; Yang, Changsheng; Li, Can; Feng, Zhouming; Peng, Mingying; Deng, Huaqiu; Yang, Zhongmin

doi:10.1364/ol.41.001333

Cited by 53 publications

(24 citation statements)

References 18 publications

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“…The initial laser is a linear-polarized low-noise single-frequency laser (SF seed) with central wavelength of ~ 1071 nm and output power of about 20 mW [29]. The initial laser is externally modulated through a fiber-coupled LiNbO 3 electro-optic modulator (EOM), driven by a white noise signal (WNS) generator and a radio frequency (RF) amplifier, to broaden its spectral width for SBS suppression.…”

Section: Methodsmentioning

confidence: 99%

All-fiberized and narrow-linewidth 5 kW power-level fiber amplifier based on a bidirectional pumping configuration

Liu

et al. 2021

High Pow Laser Sci Eng

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In this paper, an all-fiberized and narrow-linewidth 5 kW power-level fiber amplifier is presented. The laser is achieved based on the master oscillator power amplification (MOPA) configuration, in which the phase-modulated single-frequency laser is applied as the seed laser and bidirectional pumping configuration is applied in the power amplifier. The stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS), and transverse mode instability (TMI) effects are all effectively suppressed in the experiment. Consequently, the output power is scaled up to 4.92 kW with a slope efficiency of as high as ~ 80%. The 3 dB spectral width is about 0.59 nm, and the beam quality is measured to be M 2 ~ 1.22 at maximum output power. Furthermore, we have also conducted detail spectral analysis on the spectral width of the signal laser, which reveals that the spectral wing broadening phenomenon could lead to the obvious decrease of the spectral purity at certain output power. Overall, this work could provide a well reference for obtaining and optimizing high-power narrow-linewidth fiber lasers.

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Section: Methodsmentioning

confidence: 99%

All-fiberized and narrow-linewidth 5 kW power-level fiber amplifier based on a bidirectional pumping configuration

Liu

et al. 2021

High Pow Laser Sci Eng

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“…采用虚拟折叠腔与慢光技术相结合的方式, 实现了3 dB线宽压窄至600 Hz的单频光纤激光输出 [58] . 采用饱和非线性放大效应和光电反馈技术, 在0.8~50 MHz频率范围内将单频光纤激光的噪声抑制到−150 dB/Hz, 接近量子噪声极限 [59,60] [64] . 2014年, 美国空军实验室利用光子晶体光纤实现了811 W的1064 nm单频激光输出, 为空间结构单频激光的最高功率水平 [65] .…”

Section: 年德国柏林工业大学和Fbh公司成功研制了unclassified

“…大功率光纤激光器合成技术已成为国际上的研究热点, 多个国家都对此展开了广泛而深入的研究 [48,72~76] [72] 于2011年采用主动相位控制方法, 完成了8路500 W掺Yb 3+ 光纤放大器的相干合成. 图 7 (网络版彩图)不同条件下单频光纤激光器的相对强度噪声结果 [59] 图 8 (网络版彩图)332 W全光纤线偏振单频激光器装置结构示意图 [67] 实验上采用商用光纤放大器, 成功地将功率5 mW, 线宽10 GHz的种子源放大至功率500 W量级, 系统总输出功率4 kW, 合成效率达到了78% [72] .…”

Section: 年德国柏林工业大学和Fbh公司成功研制了unclassified

Research advance on the key technology of high-power fiber laser materials and components

Yang

Zhou

et al. 2017

Sci. Sin.-Tech.

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Towards tapered-fiber-based all-fiberized high power narrow linewidth fiber laser SCIENCE CHINA Technological Sciences 61, 971 (2018); High-power double-cladding fiber lasers: A 30-year overview SCIENTIA SINICA Technologica 50, 123 (2020); Tandem pumping architecture enabled high power random fiber laser with near-diffraction-limited beam quality SCIENCE CHINA Technological Sciences 62, 80 (2019);

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“…Recently, we have presented broad-bandwidth near-shotnoise-limited intensity noise suppression of a single-frequency fiber laser based on a semiconductor optical amplifier with optoelectronic feedback [19]. In this paper, we introduce a noise-sidebands-free and ultra-low-RIN 1.5 μm linearly polarized single-frequency fiber laser.…”

Section: Introductionmentioning

confidence: 99%

Noise-sidebands-free and ultra-low-RIN 15 μm single-frequency fiber laser towards coherent optical detection

Zhao

Zhang

et al. 2018

Photon. Res.

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A noise-sidebands-free and ultra-low relative intensity noise (RIN) 1.5 μm single-frequency fiber laser is demonstrated for the first time to our best knowledge. Utilizing a self-injection locking framework and a booster optical amplifier, the noise sidebands with relative amplitudes as high as 20 dB are completely suppressed. The RIN is remarkably reduced by more than 64 dB at the relaxation oscillation peak to retain below −150 dB∕Hz in a frequency range from 75 kHz to 50 MHz, while the quantum noise limit is −152.9 dB∕Hz. Furthermore, a laser linewidth narrower than 600 Hz, a polarization-extinction ratio of more than 23 dB, and an optical signal-to-noise ratio of more than 73 dB are acquired simultaneously. This noise-sidebands-free and ultralow-RIN single-frequency fiber laser is highly competitive in advanced coherent light detection fields including coherent Doppler wind lidar, high-speed coherent optical communication, and precise absolute distance coherent measurement.

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Broad-bandwidth near-shot-noise-limited intensity noise suppression of a single-frequency fiber laser

Cited by 53 publications

References 18 publications

All-fiberized and narrow-linewidth 5 kW power-level fiber amplifier based on a bidirectional pumping configuration

All-fiberized and narrow-linewidth 5 kW power-level fiber amplifier based on a bidirectional pumping configuration

Research advance on the key technology of high-power fiber laser materials and components

Noise-sidebands-free and ultra-low-RIN 15 μm single-frequency fiber laser towards coherent optical detection

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