中国激光, 2019, 46 (7): 0701004, 网络出版: 2019-07-11  

基于钕钆双掺氟化钙晶体的调谐和双波长锁模激光器 下载: 1103次

Tunable and Dual-Wavelength Mode-Locked Laser Based on Nd/Gd Co-Doped Calcium Fluoride Crystal
作者单位
1 山东师范大学物理与电子科学学院, 山东 济南 250014
2 山东省光学与光子器件技术重点实验室, 山东 济南 250014
3 中国科学院上海硅酸盐研究所, 上海 201899
摘要
Nd,Gd∶CaF2是一种无序结构晶体,具有光谱宽、热导率高、透射范围大、声子能量低等优势。利用0.5%Nd,8%Gd∶CaF2晶体作为激光增益介质(百分数为原子数分数),实现了LD抽运的调谐激光输出,激光调谐波长范围为1045.7~1074.2 nm;将半导体可饱和吸收镜作为锁模元件,最终实现了双波长锁模激光输出,锁模激光器的中心波长分别位于1065.45 nm和1066.48 nm。锁模激光器的最大平均输出功率约为394 mW,最小脉冲宽度约为8.37 ps。
Abstract
Nd, Gd∶CaF2 is a disordered crystal, and has advantages of broadband spectrum, high thermal conductivity, wide transmission range, and low phonon energy. Using a 0.5%Nd, 8%Gd∶CaF2 disordered crystal as laser-gain medium, in which 0.5% and 8% are both atomic fractions, a diode-pumped tunable laser is realized for the first time herein, to the best of our knowledge. A continuous tuning range of approximately 28.5 nm (1045.7-1074.2 nm) is obtained. Using a semiconductor saturable absorber mirror as mode locker, a dual-wavelength mode-locked laser is demonstrated. The central wavelengths of the mode-locked laser are 1065.45 nm and 1066.48 nm. The maximum output power of the mode-locked laser is approximately 394 mW, and the minimum pulse width is 8.37 ps.

杨颖, 宗梦雨, 赵梦菲, 孙硕, 吴永静, 彭倩倩, 刘杰, 苏良碧. 基于钕钆双掺氟化钙晶体的调谐和双波长锁模激光器[J]. 中国激光, 2019, 46(7): 0701004. Ying Yang, Mengyu Zong, Mengfei Zhao, Shuo Sun, Yongjing Wu, Qianqian Peng, Jie Liu, Liangbi Su. Tunable and Dual-Wavelength Mode-Locked Laser Based on Nd/Gd Co-Doped Calcium Fluoride Crystal[J]. Chinese Journal of Lasers, 2019, 46(7): 0701004.

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