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Measurement of thermal lensing in Cr 3+-doped colquiriites

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Date

1998

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Abstract

The first direct measurements of thermally induced lensing in end-pumped Cr 3+-doped LiSAF, LiSGAF, LiSCAF, and LiCAF are reported. Using a sensitive measurement technique, focal lengths as long as 40 m were measured. A thermal model has been created to determine the temperature rise as a function of position inside the laser crystal. This new model calculates the temperature distribution by considering quantum defect, upconversion, and upper state lifetime quenching as heating sources. Thermal lensing in the colquiriites is significantly reduced because of compensation of the temperature-dependent refractive index by the induced photoelastic stress inside the colquiriite crystal.

Description

Keywords

Chromium materials, Laser beam distortions, Laser measurements, Laser thermal factors, Solid lasers

Citation

URI

https://dspace-test.anu.edu.au/handle/1885/733740933

Collections

DevOps Pure Testing

Source

IEEE Journal of Quantum Electronics

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Article

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DOI

10.1109/3.668779

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