Signature of the microcavity exciton-polariton relaxation mechanism in the polarization of emitted light

被引：21

作者：

Roumpos, Georgios ^{[1
]}

Lai, Chih-Wei ^{[1
,2
]}

Liew, T. C. H. ^{[3
]}

Rubo, Yuri G. ^{[4
,5
]}

Kavokin, A. V. ^{[4
,6
]}

Yamamoto, Yoshihisa ^{[1
,2
]}

机构：

[1] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

[2] Res Org Informat & Syst, Natl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan

[3] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117543, Singapore

[4] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[5] Univ Nacl Autonoma Mexico, Ctr Invest Energia, Temixco 62580, Morelos, Mexico

[6] Univ Roma Tor Vergata, Marie Curie Chair Excellence Polariton Devices, I-00133 Rome, Italy

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 19期

关键词：

aluminium compounds; Boltzmann equation; excitons; gallium arsenide; gallium compounds; ground states; III-V semiconductors; light polarisation; microcavities; phonons; polaritons; semiconductor quantum wells; spin polarised transport; BOSE-EINSTEIN CONDENSATION; SEMICONDUCTOR MICROCAVITIES; STIMULATED SCATTERING; DYNAMICS;

D O I：

10.1103/PhysRevB.79.195310

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have performed real and momentum space spin-dependent spectroscopies of spontaneously formed exciton polariton condensates for a nonresonant pumping scheme. Under a linearly polarized pump, our results can be understood in terms of spin-dependent Boltzmann equations in a two-state model. This suggests that relaxation into the ground state occurs after multiple phonon-scattering events and only one polariton-polariton scattering. For the circular pumping case, in which only excitons of one spin are injected, a bottleneck effect is observed, implying inefficient relaxation.

引用

页数：7

共 39 条

[31] Suppression of exciton-polariton light absorption in multiple quantum well Bragg structures
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PHYSICA B, 1999, 272 (1-4): : 488 - 490
[32] All-Optical Linear-Polarization Engineering in Single and Coupled Exciton-Polariton Condensates
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[37] Uncovering temperature-dependent exciton-polariton relaxation mechanisms in hybrid organic-inorganic perovskites
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[39] Impact of temperature on exciton-cavity detuning and polariton relaxation kinetics in monolayer Tungsten Disulphide (WS2) based microcavity
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