高效角抽运镱：钇铝石榴石/钇铝石榴石复合板条激光器

Efficient corner-pumped Yb:YAG/YAG composite slab laser.

作者信息

Gong Mali, Lu Fuyuan, Liu Qiang, Gong Wupeng, Li Chen

机构信息

Department of Precision Instruments and Mechanology, Center of Photonics and Electronics, State Key Laboratory of Tribology, Tsinghua University, Beijing, China.

出版信息

Appl Opt. 2006 Jun 1;45(16):3806-10. doi: 10.1364/ao.45.003806.

DOI:10.1364/ao.45.003806

PMID:16724142

Abstract

A high efficiency Yb:YAG/YAG composite slab laser is presented, in which the corner-pumped scheme is adopted. The slab is a composite crystal of Yb:YAG bonded thermally with undoped YAG at both edges. The pump light from diode arrays is coupled into the slab through four chamfers at the four corners independently. The pump absorption efficiency is studied, and an analysis method has been developed as a guide to optimize the geometric parameters of the composite slab, to obtain higher pump absorption efficiency and uniformity. The influence of the internal thermal lens on the laser resonator is analyzed. A 1016 W continuous-wave output has been obtained with the slope efficiency and optical-to-optical efficiency of 42.8% and 34.4%, respectively.

摘要

介绍了一种采用角抽运方案的高效镱

钇铝石榴石/钇铝石榴石复合板条激光器。该板条是一种镱：钇铝石榴石复合晶体，其两端边缘通过热键合与未掺杂的钇铝石榴石相连。来自二极管阵列的泵浦光通过四个角的四个斜面独立地耦合到板条中。研究了泵浦吸收效率，并开发了一种分析方法作为优化复合板条几何参数的指导，以获得更高的泵浦吸收效率和均匀性。分析了内部热透镜对激光谐振腔的影响。获得了1016W的连续波输出，斜率效率和光光效率分别为42.8%和34.4%。