STIMULATED-EMISSION VIA INELASTIC EXCITON-EXCITON SCATTERING IN ZNSE EPILAYERS

被引:60
作者
NEWBURY, PR [1 ]
SHAHZAD, K [1 ]
CAMMACK, DA [1 ]
机构
[1] COLUMBIA UNIV,DEPT APPL PHYS & NUCL ENGN,NEW YORK,NY 10027
关键词
D O I
10.1063/1.104424
中图分类号
O59 [应用物理学];
学科分类号
摘要
Stimulated emission at 6 K by optical excitation has been investigated in ZnSe epilayers. A detailed examination of the spectra below threshold indicates that the stimulated emission is due to inelastic exciton-exciton scattering, in contrast with some recent reports that lasing is due to electron-hole plasma luminescence modified by self-absorption. A red shift of the lasing line at high pump intensities has also been modeled in terms of the exciton-exciton and band filling mechanisms, giving excellent agreement with the data.
引用
收藏
页码:1065 / 1067
页数:3
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