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
激光器 无序结构晶体 调谐激光 双波长 锁模激光器 二极管抽运激光器 lasers disordered structure crystal tunable laser dual-wavelength mode-locked laser diode-pumped laser
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.