在2122纳米处具有高功率单频激光输出的共振泵浦单片非平面钬钇铝石榴石环形激光器。

Resonantly pumped monolithic nonplanar Ho:YAG ring laser with high-power single-frequency laser output at 2122 nm.

作者信息

Wang Lei, Gao Chunqing, Gao Mingwei, Li Yan

机构信息

School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China.

出版信息

Opt Express. 2013 Apr 22;21(8):9541-6. doi: 10.1364/OE.21.009541.

DOI:10.1364/OE.21.009541

PMID:23609664

Abstract

We demonstrated a stable single-frequency laser operating at 2122 nm from a monolithic nonplanar Ho:YAG ring oscillator (NPRO). The Ho:YAG NPRO was resonantly pumped by a 1907 nm Tm:YLF laser built up by ourselves. The maximum multimode output power from the Ho:YAG NPRO was 9.66 W and the slope efficiency was 71.7%. With accurate adjustment of the pump position to make the laser oscillate in single frequency condition, an output power of 8.0 W was obtained with a slope efficiency of 61.4% and an optical-optical efficiency of 50.0%. The power stability of the Ho:YAG NPRO laser was 0.29% at maximum single frequency output power. The beam quality M(2) factors were measured to be less than 1.1 in x- and y- directions.

摘要

我们展示了一种基于单片非平面钬镱铝石榴石（Ho:YAG）环形振荡器（NPRO）、工作在2122纳米波长的稳定单频激光器。该Ho:YAG NPRO由我们自行搭建的1907纳米掺铥氟化钇锂（Tm:YLF）激光器进行共振泵浦。Ho:YAG NPRO的最大多模输出功率为9.66瓦，斜率效率为71.7%。通过精确调整泵浦位置以使激光器在单频条件下振荡，获得了8.0瓦的输出功率，斜率效率为61.4%，光光效率为50.0%。Ho:YAG NPRO激光器在最大单频输出功率时的功率稳定性为0.29%。在x和y方向上测得的光束质量M²因子均小于1.1。