Measurement of thermal lensing in Cr3+-doped colquiriites

    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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