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International Journal of Optics
Volume 2009 (2009), Article ID 730165, 8 pages
http://dx.doi.org/10.1155/2009/730165
Research Article

A Simple Approach for Enhancing the Output Performance of Solar-Pumped Solid-State Lasers

Centro de Física e Investigação Tecnológica (CEFITEC), Departamento de Física, Faculdade de Ciências e Tecnologia (FCT), Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal

Received 19 September 2008; Accepted 2 December 2008

Academic Editor: David Coutts

Copyright © 2009 Dawei Liang and Rui Pereira. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A simple truncated fused silica elliptical cavity is proposed to enhance the output performance of solar-pumped solid-state lasers. The imaging property of the truncated elliptical cavity ensures an enhanced absorption distribution within an Nd:YAG rod. Optimum pumping parameters are found through ZEMAX nonsequential ray-tracing and LASCAD laser cavity analyses. Compared with the output laser performance of a 3D-compound parabolic concentrator-2D-compound parabolic concentrator (3D-CPC-2D-CPC) cavity, the truncated cavity provides 11% more multimode and 72.7% more T E M 0 0 laser powers. A laser beam of high beam quality can be produced efficiently. The standard tracking error for multimode laser power is also reduced to only 4.0% by the truncated cavity.