由激光二极管在1.47微米波长下共振泵浦的高效掺铒钇镓石榴石激光器。

High-efficiency Er-doped yttrium gallium garnet laser resonantly pumped by a laser diode at 1.47 µm.

作者信息

You Li, Zhao Yongguang, Lu Dazhi, Liang Fei, Li Lei, Chen Ying, Liu Jian, Wang Jianlei, Yu Haohai, Zhang Huaijin, Wang Jiyang

出版信息

Opt Lett. 2020 Aug 1;45(15):4361-4364. doi: 10.1364/OL.401155.

DOI:10.1364/OL.401155

PMID:32735299

Abstract

The spectroscopic and laser properties of an -doped yttrium gallium garnet crystal, (YGG), are studied. The stimulated emission cross section is 1.4×10 at 1.65 µm. A continuous-wave laser resonantly pumped by a laser diode at 1.47 µm is demonstrated, delivering a maximum output power of 3.34 W. Benefiting from the low phonon energy of the YGG host, the corresponding slope efficiency is as high as ∼42. To the best of our knowledge, this is the highest slope efficiency from the laser-diode resonantly pumped Er lasers at room temperature in the 1.6 µm spectral range.

摘要

研究了掺铒钇镓石榴石晶体（YGG）的光谱和激光特性。在1.65μm处的受激发射截面为1.4×10 。展示了一种由1.47μm激光二极管共振泵浦的连续波激光器，其最大输出功率为3.34W。得益于YGG基质的低声子能量，相应的斜率效率高达约42%。据我们所知，这是室温下在1.6μm光谱范围内由激光二极管共振泵浦的铒激光器所获得的最高斜率效率。