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Numerical Analysis of Temperature Dependencies of Optical Elasticity Coefficient on Lens Induced in Solid-State Laser Crystal

Haider M. Majeed --- Riyadh A. Jassim --- Ahmed J. Kadhim

Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية
ISSN: 18132065 23091673 Year: 2018 Volume: 14 Issue: 2 Pages: 35-42
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

Abstract

In this work, one effect of the optical pumping power on the characteristics of a solid-state Nd:YAG laser was studied. The main parameter considered is the change in focal length of lens induced in the Nd:YAG crystal due to temperature-dependent variation in both refractive index and optical elasticity coefficient. The pumping-induced change in focal length of such lens is an important parameter in laser design as it determines how long the optical resonator may keep its stability during operation. It also assigns the main features to be considered in order to obtain the optimum characteristics of the produced laser beam. This investigation does not consider all aspects may affect laser operation but it represents a forward step to understand the intracavity limitations of solid-state, specially Nd:YAG, laser.

Keywords

Thermal lens --- Nd:YAG laser --- Optical pumping --- Birefringence