Indirect stimulated emission at room temperature
作者:
M. Rinker,
H. Kalt,
K. Ko¨hler,
期刊:
Applied Physics Letters
(AIP Available online 1990)
卷期:
Volume 57,
issue 6
页码: 584-586
ISSN:0003-6951
年代: 1990
DOI:10.1063/1.103605
出版商: AIP
数据来源: AIP
摘要:
Stimulated emission in indirect band‐gap AlxGa1−xAs is observed at room temperature. This indirect stimulated emission is based on alloy disorder induced no‐phonon band‐to‐band transitions. Picosecond luminescence spectroscopy as a function of alloy composition reveals a quadratic dependence of the threshold pump intensity on the energy separation of the renormalized direct and indirect conduction bands. These threshold intensities increase exponentially with lattice temperature. The temperature dependence of the threshold intensity is much weaker than in direct band‐gap AlxGa1−xAs.
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