二极管泵浦连续波和被动调Q的2微米Tm,Ho:LLF激光器

Diode-pumped continuous wave and passively Q-switched Tm,Ho:LLF laser at 2 µm.

作者信息

Zhang Xinlu, Yu Long, Zhang Su, Li Li, Zhao Jiaqun, Cui Jinhui

机构信息

Key Laboratory of In-fiber integrated Optics Ministry of Education and College of Science, Harbin Engineering University, Harbin 150001, China.

出版信息

Opt Express. 2013 May 20;21(10):12629-34. doi: 10.1364/OE.21.012629.

DOI:10.1364/OE.21.012629

PMID:23736482

Abstract

A compact diode-pumped continuous wave and passively Q-switched Tm,Ho:LuLiF(4) laser is demonstrated. The maximal output power of 381 mW at 2069 nm in continuous wave regime is obtained at an absorbed pump power of 1.5 W. By using a Cr(2+):ZnS saturable absorber, the maximum Q-switched average output power of 74 mW is obtained at 2055 nm. The pulse width and pulse energy are almost independent of the absorbed pump power, with the maximal values of 1.2 μs and of 13 μJ respectively. The pulse repetition frequency can be tuned almost linearly from 1 to 5.8 kHz by changing the absorbed pump power. Furthermore, a comparative analysis of laser performances with different output couplers is first carried out.

摘要

展示了一种紧凑的二极管泵浦连续波和被动调Q的Tm,Ho:LuLiF(4)激光器。在1.5W的吸收泵浦功率下，连续波模式下在2069nm处获得了381mW的最大输出功率。通过使用Cr(2+):ZnS可饱和吸收体，在2055nm处获得了74mW的最大调Q平均输出功率。脉冲宽度和脉冲能量几乎与吸收泵浦功率无关，其最大值分别为1.2μs和13μJ。通过改变吸收泵浦功率，脉冲重复频率可在1至5.8kHz范围内几乎线性调谐。此外，首次对不同输出耦合器的激光性能进行了对比分析。