Strong room-temperature exciton-photon coupling in low-finesse microcavities grown by molecular-beam epitaxy

被引：0
作者：
Sun, JM
Zhang, YF
Han, YJ
Wang, WX
Bao, CL
Li, W
Zhou, JM
Huang, Q
Feng, BH
Zhang, XL
机构：
[1] Chinese Acad Sci, Inst Phys, MBE Lab, Grp 605, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Opt Phys Lab, Beijing 100080, Peoples R China
来源：
JOURNAL OF CRYSTAL GROWTH | 2001年 / 227卷
关键词：
molecular beam epitaxy; quantum wells;
D O I：
10.1016/S0022-0248(01)00652-2
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Room-temperature strong exciton-photon coupling phenomena was studied in a low-finesse quantum microcavity entirely filled with 17.5 pairs of GaAs (80 Angstrom )Al0.3Ga0.7As (42 Angstrom) quantum wells. The front and back distributed Bragg reflectors of the microcavity consist of only 6 and 8 pairs of lambda /4 stacks of GaAs (30 Angstrom)/AlAs (5 Angstrom) superlattices and AlAs layers. And the lambda /4 GaAs (30 Angstrom)/AlAs (5 Angstrom) superlattices are equal to the Al0.2Ga0.8As layer in thc distributed Bragg reflector. Large Rabi splitting of 9.4meV was observed at resonance with heavy-hole excitons at room temperature. Photoluminescence spectra show cd a transition from linear regime to high carrier density nonlinear regime due to loss of oscillator strength and collapse of the coupling at high excitation intensity. (C) 2001 Published by Elsevier Science B.V.
引用
收藏
页码：138 / 142
页数：5
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