室温下二极管泵浦Er:YAP晶体实现2.92微米高效连续波激光运转

2.92-µm high-efficiency continuous-wave laser operation of diode-pumped Er:YAP crystal at room temperature.

作者信息

Kawase Hiroki, Yasuhara Ryo

出版信息

Opt Express. 2019 Apr 29;27(9):12213-12220. doi: 10.1364/OE.27.012213.

DOI:10.1364/OE.27.012213

Abstract

Mid-infrared lasers have attracted attention for application to the fields of medicine and industry. In this study, we demonstrate continuous-wave laser operation of a diode-pumped 5 at % Er-doped YAlO (YAP) single-crystal lasing at 2.92 µm with near-quantum-defect slope efficiency at room temperature. A high slope efficiency of 31% is achieved with a maximum output power of 0.674 W for a cavity length of 18 mm and an output coupler transmittance of 2.5%. This efficiency is 94% of the theoretical quantum-defect efficiency. Our results indicate that Er:YAP lasers can potentially be utilized to realize high-power mid-IR lasing.

摘要

中红外激光在医学和工业领域的应用已引起关注。在本研究中，我们展示了一种二极管泵浦的5%铒掺杂钇铝氧（YAP）单晶激光器在室温下以近量子缺陷斜率效率在2.92 µm波长处实现连续波激光运转。对于腔长为18 mm且输出耦合器透过率为2.5%的情况，实现了31%的高斜率效率，最大输出功率为0.674 W。该效率为理论量子缺陷效率的94%。我们的结果表明，铒掺杂钇铝氧（Er:YAP）激光器有潜力用于实现高功率中红外激光发射。