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Nd∶YVO4/Nd∶GdVO4组合晶体双频激光器实验研究

Experimental Study of the Dual-Frequency Laser Based on the Nd∶YVO4/Nd∶GdVO4 Combined Crystal

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摘要

实验研究了在一定抽运条件下, Nd∶YVO4/Nd∶GdVO4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。

Abstract

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.

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中图分类号:TN248.1

DOI:10.3788/lop55.091407

所属栏目:激光器与激光光学

基金项目: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)

收稿日期:2018-04-07

修改稿日期:2018-04-17

网络出版日期:2018-04-23

作者单位    点击查看

金涛:杭州电子科技大学通信工程学院, 浙江 杭州 310018
胡淼:杭州电子科技大学通信工程学院, 浙江 杭州 310018国民核生化灾害防护国家重点实验室, 北京 102205
李鹏:国民核生化灾害防护国家重点实验室, 北京 102205防化研究院, 北京 102205
范红丹:杭州电子科技大学学校办公室, 浙江 杭州 310018
韩宁:杭州电子科技大学通信工程学院, 浙江 杭州 310018
冯冰:杭州电子科技大学通信工程学院, 浙江 杭州 310018
欧军:杭州电子科技大学通信工程学院, 浙江 杭州 310018
周雪芳:杭州电子科技大学通信工程学院, 浙江 杭州 310018
杨国伟:杭州电子科技大学通信工程学院, 浙江 杭州 310018
卢旸:杭州电子科技大学通信工程学院, 浙江 杭州 310018
毕美华:杭州电子科技大学通信工程学院, 浙江 杭州 310018

联系人作者:李鹏(myddp@126.com); 金涛(760310293@qq.com); 胡淼(miao_hu@foxmail.com);

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引用该论文

Jin Tao,Hu Miao,Li Peng,Fan Hongdan,Han Ning,Feng Bing,Ou Jun,Zhou Xuefang,Yang Guowei,Lu Yang,Bi Meihua. Experimental Study of the Dual-Frequency Laser Based on the Nd∶YVO4/Nd∶GdVO4 Combined Crystal[J]. Laser & Optoelectronics Progress, 2018, 55(9): 091407

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. Nd∶YVO4/Nd∶GdVO4组合晶体双频激光器实验研究[J]. 激光与光电子学进展, 2018, 55(9): 091407

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