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Laser oscillations in the bound‐excitonic region of CdS

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2 Author(s)
Song, J.J. ; University of Southern California, Department of Physics, Los Angeles, California 90089‐0484 ; Wang, W.-C.

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By employing a simple hemispherical resonator configuration, laser oscillations were observed from vapor‐grown undoped CdS platelets pumped by 4‐nsec dye laser pulses. The lasing shifted toward longer wavelengths from 4885 to 5180 Å by varying the temperature of the samples from 5 to 250 °K. The laser emission observed at low temperatures is attributed to the acoustic‐phonon‐coupled I1 bound‐exciton transitions. The resonant behavior of this laser process is also reported.

Published in:

Journal of Applied Physics  (Volume:55 ,  Issue: 3 )