Linearly polarized, narrow-linewidth, and tunable Yb:YAG thin-disk laser

被引：22

作者：

Rumpel, Martin ^{[1
]}

Voss, Andreas ^{[1
]}

Moeller, Michael ^{[2
]}

Habel, Florian ^{[3
]}

Moormann, Christian ^{[2
]}

Schacht, Martin ^{[3
]}

Graf, Thomas ^{[1
]}

Ahmed, Marwan Abdou ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Strahlwerkzeuge, D-7000 Stuttgart, Germany

[2] AMO GmbH, D-52074 Aachen, Germany

[3] LASER COMPONENTS GmbH, D-82140 Olching, Germany

来源：

OPTICS LETTERS | 2012年 / 37卷 / 20期

关键词：

EFFICIENCY; MODE; YB;

D O I：

10.1364/OL.37.004188

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the design, fabrication, and implementation of grating-waveguide structures (GWS) for intracavity polarization and wavelength selection as well as wavelength tuning. The GWS discussed in this Letter is a combination of a low-index leaky-mode waveguide, a subwavelength diffraction grating, and a highly reflective mirror that was designed to operate in Littrow configuration. Using our device as the end mirror of an Yb:YAG thin-disk laser allowed the extraction of beams that exhibit an extremely narrow laser emission bandwidth of approximate to 25 pm FWHM and a high degree of linear polarization of 99 +/- 0.5%. Moreover, the GWS allows a wavelength tuning range from 1007 to 1053 nm. The high-power suitability and the low loss of the GWS was demonstrated by the intracavity use in an Yb: YAG thin-disk laser with an output power of 325 W in multimode operation (M-2 = 6) and with 110 W in fundamental-mode operation (M-2 approximate to 1.2), exhibiting optical efficiencies of 53.2% and 36.2%, respectively. An output power of 1.8 kW, corresponding to a power density of 125 kW/cm(2) on the grating, was achieved in further higher-power experiments. (C) 2012 Optical Society of America

引用

页码：4188 / 4190

页数：3

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