Submillimeter P-Ge Laser Using A Voigt-Configured Permanent Magnet

    Authors

    K. Park; R. E. Peale; H. Weidner;J. J. Kim

    Comments

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    Abbreviated Journal Title

    IEEE J. Quantum Electron.

    Keywords

    FAR-INFRARED LASER; HOT HOLES; OSCILLATION; GERMANIUM; RADIATION; Engineering, Electrical & Electronic; Optics; Physics, Applied

    Abstract

    A p-Ge laser at 170-200 mu m wavelengths in Voigt configuration using a regular permanent magnet is reported. Results are compared with those obtained using a Faraday-configured superconducting magnet. Emission is observed over a wider range of electric-field magnitude in Voigt configuration at a given magnetic field. Time-resolved emission studies reveal unusual pulse dynamics which depend on the magnitude and duration of the applied electric field. Spectral content, Gaussian-beam profiles, and polarization are essentially independent of these temporal effects. A significant repetition-rate increase is found using copper heat sinks. An increased emission-pulse delay with increasing initial-sample temperature and the temperature independence of the emission quench time are both explained by Joule heating of the laser medium, Lasing persists above 10 K, raising the possibility of a practical p-Ge laser without need for liquid helium as a coolant.

    Journal Title

    Ieee Journal of Quantum Electronics

    Volume

    32

    Issue/Number

    7

    Publication Date

    1-1-1996

    Document Type

    Article

    Language

    English

    First Page

    1203

    Last Page

    1210

    WOS Identifier

    WOS:A1996UT42700012

    ISSN

    0018-9197

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