Development of edge pumped Yb: YAG planar waveguide lasers

被引：1

作者：

Baker, H. J. ^{[1
]}

Monjardin, J. F. ^{[1
]}

Thomson, I. ^{[1
]}

Trela, N. ^{[1
]}

RValera, J. D. ^{[1
]}

Hall, D. R. ^{[1
]}

机构：

[1] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

来源：

SOLID STATE LASERS XVII: TECHNOLOGY AND DEVICES | 2008年 / 6871卷

关键词：

planar waveguide laser; Ytterbium : YAG; light trapping modeling;

D O I：

10.1117/12.774124

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A waveguide with 150 gm core height of 2% Yb:YAG between sapphire claddings is core-pumped at 480W by diode bars coupled into the 13 mm long edge-facet. The pump unit has custom correction of collimation errors and lens aberrations. Using a 6mm. width and 7 degrees edge-facet angle, power is limited by competing ASE loss or parasitic oscillation along TIR-trapped internal paths, giving 40 W output for stable and 25 W for unstable resonators. Ray-tracing shows a 20 degrees facet angle is necessary to successfully out-couple ASE from the core. Preliminary operation at 90W and an increased threshold for the parasitic oscillation are obtained.

引用

页码：Q8710 / Q8710

页数：8

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