摘要
实验研究了在一定抽运条件下,Nd:YVO_4/Nd:Gd VO_4组合晶体双频激光器随温度变化的输出特性。在实验过程中,设置抽运电流为14. 5 A,以5℃为间隔增加组合晶体的热沉温度,当温度由5℃升至40℃时,激光器实现了大于310 GHz的超大频差双频激光信号输出。实验结果发现:输出双频激光信号的功率均与热沉温度呈负相关关系,拟合出的左、右峰功率随热沉温度的变化率分别为-0. 0190℃^(-1)和-0. 0082℃^(-1);尤其当热沉温度为32. 36℃时,双频激光器达到功率均衡状态。此外,实验结果还发现输出双频激光信号的波长会随着热沉温度的上升发生线性红移,其中左峰漂移速度为9. 70 pm·℃^(-1),右峰漂移速度为6. 12 pm·℃^(-1)。
The output characteristics of the dual-frequency laser （DFL） based on the Nd： YVO4/Nd：GdVO4 combined crystal have been investigated experimentally. In the experiment, the pump current at 14.5 A is set, the heat sink temperature of the combined crystal rises from 5 ℃ to 40 ℃ with 5 ℃ intervals, and a DFL signal with super-large frequency difference up to 310 GHz is achieved. The experimental results show that the DFL signal power has a negative correlation with the heat sink temperature. The fitting rates of the left and right peaks power with heat sink temperature are -0. 0190 ℃^-1 and -0. 0082 ℃^-1 , respectively. The DFL reaches power balance at the heat sink temperature of 32.36 ℃. In addition, the experiment also shows that the wavelengths of the DFL signal are red-shifted linearly with the heat sink temperature increasing. The measured red-shift rates of the left peak and right peak are 9.70 pm·℃^-1 and 6.12 pm·℃^-1, respectively.
作者
金涛
胡淼
李鹏
范红丹
韩宁
冯冰
欧军
周雪芳
杨国伟
卢旸
毕美华
Jin Tao;Hu Miao;Li Peng;Fan Hongdan;Han Ning;Feng Bing;Ou Jun;Zhou Xuefang;Yang Guowei;Lu Yang;Bi Meihua(College of Communication Engineering,Hangzhou Dianzi University,Hangzhou,Zhejiang 310018,China;State Key Laboratory of NBC Protection for Civilian,Beijing 102205,China;Research Institute of Chemical Defense,Beijing 102205,China;School Office,Hangzhou Dianzi University,Hanqzhou,Zhejiana 310018.China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第9期283-287,共5页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61705055)
国民核生化灾害防护国家重点实验室开放基金(SKLNBC2015G03)
关键词
激光器
组合晶体
频差
功率均衡
lasers
combined crystal
frequency difference
power balance
