Passive compensation of the misalignment instability caused by air convection in thin-disk lasers

被引：15

作者：

Dietrich, Tom ^{[1
]}

Piehler, Stefan ^{[1
]}

Roecker, Christoph ^{[1
]}

Rumpel, Martin ^{[2
]}

Ahmed, Marwan Abdou ^{[1
]}

Graf, Thomas ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Strahlwerkzeuge, Pfaffenwaldring 43, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, MarTec Photon, Pfaffenwaldring 43, D-70569 Stuttgart, Germany

来源：

OPTICS LETTERS | 2017年 / 42卷 / 17期

关键词：

DEFORMABLE MIRRORS;

D O I：

10.1364/OL.42.003263

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Wavefront distortions caused by the convection of heated ambient air in front of the laser crystal induce severe pump-power-dependent misalignment in thin-disk laser (TDL) resonators. This effect is particularly pronounced in fundamental mode operation and limits the output power when no realignment of the resonator is possible during operation. In this Letter, we present a new approach to passively compensate for this misalignment instability by exploiting the spectral dispersion of a highly efficient grating-waveguide mirror used as a cavity end-mirror in a Littrow configuration. By this, it was possible to almost triple the output power of a fundamental mode Yb:LuAG TDL pumped at 969 nm. (C) 2017 Optical Society of America

引用

页码：3263 / 3266

页数：4

共 8 条

[1] Thermal and laser properties of Yb:LuAG for kW thin disk lasers [J].