Temperature-Induced Wavelength Shift of Electron-Beam-Pumped Lasers from CdSe, CdS, and ZnO

Jørn Märcher Hvam

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    Abstract

    Experimental results on the temperature dependence of the laser frequency and threshold pump power are presented in the range from liquid helium to room temperature for electron-beam-pumped CdSe, CdS, and ZnO lasers. A linear shift of the laser frequency at high temperatures and a relatively slow linear increase of threshold with increasing temperature are found. A model is proposed that takes into account the reabsorption in the crystal below the lowest exciton energy. The results of this model are in quantitative agreement with the experimental data. The absorption coefficient at the laser frequency is determined in the three materials.
    Original languageEnglish
    JournalPhysical Review B Condensed Matter
    Volume4
    Issue number12
    Pages (from-to)4459-4464
    ISSN0163-1829
    DOIs
    Publication statusPublished - 1971

    Bibliographical note

    Copyright (1971) by the American Physical Society.

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