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基于被动同步的宽调谐中红外差频技术研究

Study on Widely Tunable Mid-Infrared Difference-Frequency Generation Based on Passive Synchronization

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摘要

实验搭建了基于同步脉冲泵浦的非线性差频中红外光源,利用主-从注入式全光调制技术实现了保偏掺饵和掺镱锁模光纤激光器的被动同步输出,结合高非线性光纤光谱展宽和宽带可调谐滤波器,获得了2940~3260 nm宽波段可调谐的中红外皮秒激光,平均功率为580~926 mW,最大泵浦光转换效率为41%。实验发现,小功率的同步诱导脉冲注入可以大幅降低中红外参量产生的泵浦阈值,从而放宽了高效率中红外产生对高功率泵浦光场的要求。

Abstract

We have experimentally implemented a difference-frequency-generated mid-infrared (MIR) source based on synchronously pulsed pumping. The passive synchronization between polarization-maintaining Er- and Yb-doped mode-locked fiber lasers was realized by using all-optical modulation technique via master-slave injection. By combining spectral broadening of highly nonlinear fiber and wide-band tunable filter, we could obtain broadly tunable MIR picosecond laser from 2940 nm to 3260 nm. The average power was 580 mW to 926 mW,and the maximum pump conversion efficiency was 41%. In the experiment, the injection of low-power synchronous induced pulses could substantially reduce the pumping threshold for the MIR parametric generation, which would relax the requirement of strong pump field to realize efficient MIR generation.

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中图分类号:O437

DOI:10.3788/CJL202047.1115001

所属栏目:快报

基金项目:国家重点研发计划、国家自然科学基金、上海市科技创新行动计划 、上海高校特聘教授岗位计划;

收稿日期:2020-07-30

修改稿日期:2020-09-02

网络出版日期:2020-11-01

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李博文:上海理工大学光电信息与计算机工程学院, 上海 200093
武佳美:上海理工大学光电信息与计算机工程学院, 上海 200093
徐明航:上海理工大学光电信息与计算机工程学院, 上海 200093
江云峰:上海理工大学光电信息与计算机工程学院, 上海 200093
郝强:上海理工大学光电信息与计算机工程学院, 上海 200093
杨康文:上海理工大学光电信息与计算机工程学院, 上海 200093
黄坤:上海理工大学光电信息与计算机工程学院, 上海 200093
曾和平:上海理工大学光电信息与计算机工程学院, 上海 200093华东师范大学精密光谱科学与技术国家重点实验室, 上海 200062济南量子技术研究院, 山东 济南 250101

联系人作者:黄坤(khuang@usst.edu.cn)

备注:国家重点研发计划、国家自然科学基金、上海市科技创新行动计划 、上海高校特聘教授岗位计划;

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引用该论文

Li Bowen,Wu Jiamei,Xu Minghang,Jiang Yunfeng,Hao Qiang,Yang Kangwen,Huang Kun,Zeng Heping. Study on Widely Tunable Mid-Infrared Difference-Frequency Generation Based on Passive Synchronization[J]. Chinese Journal of Lasers, 2020, 47(11): 1115001

李博文,武佳美,徐明航,江云峰,郝强,杨康文,黄坤,曾和平. 基于被动同步的宽调谐中红外差频技术研究[J]. 中国激光, 2020, 47(11): 1115001

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