Ring-shaped spatial photoluminescence profiles in two-dimensional semiconductors

被引：1
|
作者：
Inagaki, Takeshi J. [1 ]
Miyake, Aya [1 ]
Aihara, Masaki [1 ]
机构：
[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300192, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2007年 / 76卷 / 11期
关键词：
quantum wells; exciton BEC; nonlinear optical spectroscopy of semiconductors; time-resolved optical spectroscopy of semiconductors; space-resolved optical spectroscopy of semiconductors;
D O I：
10.1143/JPSJ.76.114705
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We theoretically study the ring-shaped spatial photoluminescence (PL) profile in two-dimensional semiconductors. We numerically solve the nonlinear equation of motion for polarizations initially generated by a normally incident excitation light pulse. When the excitation light amplitude exceeds the critical value, the ring-shaped PL profile is formed. A double peak structure is also found for sufficiently strong excitations.
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页数：4
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