Dispersion-Compensation Scheme of Optical Parameter Chirp Reversal Pulse Amplification System

Wei, 李伟 Li; Xiao, 王逍 Wang; Bilong, 胡必龙 Hu; Jie, 母杰 Mu; Xiaoming, 曾小明 Zeng; Yanlei, 左言磊 Zuo; Dongbin, 蒋东镔 Jiang; Xiaodong, 王晓东 Wang; Zhaohui, 吴朝辉 Wu; Jingqin, 粟敬钦 Su

doi:10.3788/cjl202047.0601008

Cited by 3 publications

(1 citation statement)

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“…Such a broadening phenomenon can be suppressed by adjusting the dispersion parameter 30 – 32 In addition, it is possible to form Q-switched mode-locking state by adjusting the dispersion value in the cavity, so extreme caution should be exercised.…”

Section: Simulation and Results Analysismentioning

confidence: 99%

Pulse evolution in a mode-locked erbium-doped fiber laser with a repetition rate of sub-megahertz

Liu

et al. 2023

Opt. Eng.

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.Mode-locked erbium-doped fiber lasers (EDFL) with the low repetition rate and high pulse energy play an important role in many fields, such as micromechanical processing, ophthalmic surgery, biological sample detection, and LiDAR detection. However, in the 1550 nm band, due to the anomalous dispersion and nonlinear effects of erbium-doped fiber lasers (EDFLs), it is difficult to achieve mode-locked pulses especially in long cavities, which brings many difficulties to engineering applications. We analyze and simulate the pulse formation and evolution process in a mode-locked EDFL at a low repetition rate of sub-megahertz. The results show that by decreasing the gain or increasing modulation depth/saturation light intensity of saturable absorber in a specific range, a stable single-pulse mode-locked state can be achieved. Then a multipulse mode-locked state can be achieved by gradually increasing the gain or decreasing the saturation light intensity. In addition, the pulse width can be compressed by adjusting the second-order dispersion coefficient. The numerical simulation results are instructive for the design and development of EDFL at a low repetition rate of sub-megahertz.

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Section: Simulation and Results Analysismentioning

confidence: 99%

Pulse evolution in a mode-locked erbium-doped fiber laser with a repetition rate of sub-megahertz

Liu

et al. 2023

Opt. Eng.

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Angular dispersion compensation for ultra-broadband pulses by using a cascaded prism and hollow-core fiber configuration

Hu¹,

Wang²,

Liu³

et al. 2022

Opt. Express

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In this paper, we report that the angular dispersion of the output pulses in a nonlinear process can be efficiently compensated by using a cascaded prism(s) and short hollow-core fiber (HCF) configuration. Here, the prism(s) is used to suppress the angular dispersion and transform it into spatial chirp, while the HCF is used for removing this spatial chirp and the residual angular dispersion, which can also significantly improve the beam quality. The feasibility of this novel method is numerically and experimentally investigated with the ultra-broadband idler pulses centered at 1250 nm wavelength and generated by an LBO crystal based non-collinear optical parametric amplifier. The proof-of-principle experiment shows that the angular dispersion can be effectively removed and ultra-broadband idler pulses with good spectral quality and spatial profile can be obtained. The total transmission efficiency in the experiment is around 67% and the measured M x 2 and M y 2 can reach 1.12 and 1.04, respectively. To the best of our knowledge, this is the first reported ultra-broadband angular dispersion compensation scheme combining prism(s) and HCF, which can remarkably eliminate the angular dispersion while simultaneously possesses high efficiency, good spectral and beam spatial quality.

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光纤保密通信中的全光同步方案设计与实现

Dongdong¹,

Mingming²,

Jiang³

et al. 2023

中国激光

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Dispersion-Compensation Scheme of Optical Parameter Chirp Reversal Pulse Amplification System

Cited by 3 publications

References 0 publications

Pulse evolution in a mode-locked erbium-doped fiber laser with a repetition rate of sub-megahertz

Pulse evolution in a mode-locked erbium-doped fiber laser with a repetition rate of sub-megahertz

Angular dispersion compensation for ultra-broadband pulses by using a cascaded prism and hollow-core fiber configuration

光纤保密通信中的全光同步方案设计与实现

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