Title

Measurement of thermal lensing in Cr3+-doped colquiriites

Authors

Authors

J. M. Eichenholz;M. Richardson

Comments

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Abbreviated Journal Title

IEEE J. Quantum Electron.

Keywords

chromium materials; laser beam distortions; laser measurements; laser; thermal factors; solid lasers; VISIBLE LASER-DIODES; CR-LISAF LASER; HIGH-POWER; RODS; CW; TEMPERATURE; Engineering, Electrical & Electronic; Optics; Physics, Applied

Abstract

The first direct measurements of thermally induced tensing in end-pumped Cr3+-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.

Journal Title

Ieee Journal of Quantum Electronics

Volume

34

Issue/Number

5

Publication Date

1-1-1998

Document Type

Article

Language

English

First Page

910

Last Page

919

WOS Identifier

WOS:000073212900021

ISSN

0018-9197

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