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Time behavior of the internal Q switching in GaAs lasers under electron-beam excitation

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4 Author(s)
A. Masuyama ; Osaka University, Osaka, Japan ; M. Kawabe ; K. Masuda ; S. Namba

Time-resolved spectra of an internal Q -switching emission of electron-beam-excited GaAs lasers were measured. The spectra shifted to longer wavelengths at the rate of 5.63 Å/ns at 85 K. Time-resolves spectra of a normal laser emission were also measured to be shifted to longer wavelengths at the rate of about 0.3 Å/ns. This remarkable difference of the spectral shifts can be understood if the former shift is caused by the quasi-Fermi level in the conduction band and the latter shift is caused by thermal effects.

Published in:

IEEE Journal of Quantum Electronics  (Volume:9 ,  Issue: 2 )