ZnO LASER BY ELECTRON BEAM EXCITATION

The wavelength of laser emission from an electron-beam-pumped ZnO was measured in the temperature range from 82 to 250°K. The laser emission occurred near the line due to the annihilation of a free exciton assisted by one LO phonon at 82°K. Above 180°K the laser emission occurred near the line due t...

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Bibliographic Details
Published in:Applied physics letters 1970-05, Vol.16 (9), p.354-356
Main Authors: Iwai, Sohachi, Namba, Susumu
Format: Article
Language:English
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Summary:The wavelength of laser emission from an electron-beam-pumped ZnO was measured in the temperature range from 82 to 250°K. The laser emission occurred near the line due to the annihilation of a free exciton assisted by one LO phonon at 82°K. Above 180°K the laser emission occurred near the line due to the transition assisted by two LO phonons. From 130 to 170°K the laser oscillation appeared in two spectral lines. The temperature dependence of threshold current density measured from 82 to 250°K was weak compared with the theoretical curve based on the laser action involving the A-LO line.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1653223