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一種窄線寬的高重復頻率窄脈寬主動調Q光纖激光器

Actively Q-Switched Fiber Laser with Narrow Linewidth, Narrow Pulse Width, and High Repetition Rate

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摘要

提出并演示了一種基于聲光調制器(AOM)主動調Q的環形腔雙包層光纖激光器獲得窄線寬、窄脈寬和高重復頻率激光脈沖的方法。通過在腔內采用以雙包層增益光纖作為輸入尾纖的泵浦剝離器來縮短腔長,可以降低增益光纖正向放大自發輻射(ASE)的反射,抑制其ASE的增益自飽和效應,使腔內有效增益增大,窄線寬調Q脈沖可在環形腔中快速建立,從而不僅可使調Q脈沖脈寬變窄,還允許其重復頻率大幅提升。在7 W泵浦功率下,所提出的調Q光纖激光器獲得了線寬和脈寬分別窄至0.16 nm和10.4 ns、重復頻率高達150 kHz的調Q激光脈沖。

Abstract

This paper proposes and demonstrates a method to produce narrow-linewidth, narrow-pulse-width, and high-repetition-rate pulses with actively Q-switched ring-cavity all-fiber lasers based on acoustic-optic modulators. We use a double-clad gain fiber as the cladding power stripper''s input fiber in the ring cavity to shorten the cavity length and reduce reflections from the forward amplified spontaneous emission (ASE) at the output end of the gain fiber, which can efficiently suppress the ASE gain self-saturation so that the effective cavity gain can be enhanced. The narrow-linewidth Q-switched laser pulse can be established quickly, providing a narrow pulse width and high repetition rate for the pulses. Our experimental results demonstrate that the laser can produce 150-kHz Q-switched laser pulses with a narrow linewidth and pulse width of 0.16 nm and 10.4 ns, respectively, at a pump power of 7 W.

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補充資料

中圖分類號:TN248

DOI:10.3788/CJL202047.0101002

所屬欄目:激光器件與激光物理

基金項目:國家重點研發計劃、中國科學院戰略性先導科技專項、國家自然科學基金、脈沖功率激光技術國家重點實驗室開放研究基金;

收稿日期:2019-07-26

修改稿日期:2019-09-16

網絡出版日期:2020-01-01

作者單位    點擊查看

張驥:中國科學技術大學環境科學與光電技術學院, 安徽 合肥 230026中國科學院安徽光學精密機械研究所光子器件與材料安徽省重點實驗室, 安徽 合肥 230031
張東:中國科學技術大學環境科學與光電技術學院, 安徽 合肥 230026中國科學院安徽光學精密機械研究所光子器件與材料安徽省重點實驗室, 安徽 合肥 230031
劉昊煒:中國科學院安徽光學精密機械研究所光子器件與材料安徽省重點實驗室, 安徽 合肥 230031
姚波:中國科學院安徽光學精密機械研究所光子器件與材料安徽省重點實驗室, 安徽 合肥 230031
毛慶和:中國科學技術大學環境科學與光電技術學院, 安徽 合肥 230026中國科學院安徽光學精密機械研究所光子器件與材料安徽省重點實驗室, 安徽 合肥 230031

聯系人作者:毛慶和([email protected])

備注:國家重點研發計劃、中國科學院戰略性先導科技專項、國家自然科學基金、脈沖功率激光技術國家重點實驗室開放研究基金;

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引用該論文

Zhang Ji,Zhang Dong,Liu Haowei,Yao Bo,Mao Qinghe. Actively Q-Switched Fiber Laser with Narrow Linewidth, Narrow Pulse Width, and High Repetition Rate[J]. Chinese Journal of Lasers, 2020, 47(1): 0101002

張驥,張東,劉昊煒,姚波,毛慶和. 一種窄線寬的高重復頻率窄脈寬主動調Q光纖激光器[J]. 中國激光, 2020, 47(1): 0101002

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