Observation of a laserlike transition in a microcavity exciton polariton system

被引：74

作者：

Pau, S ^{[1
]}

Cao, H ^{[1
]}

Jacobson, J ^{[1
]}

Bjork, G ^{[1
]}

Yamamoto, Y ^{[1
]}

Imamoglu, A ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA, DEPT ELECT & COMP ENGN, SANTA BARBARA, CA 93106 USA

来源：

PHYSICAL REVIEW A | 1996年 / 54卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.54.R1789

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present experimental evidence of spontaneous buildup of coherent exciton polariton population in a microcavity, i.e., an exciton polariton laser. The laser phase transition was confirmed by the increased differential quantum efficiency,and decreased linewidth of the lasing polariton mode due to onset of final-state stimulations and the decreased differential quantum efficiency of a nonlasing polariton due to onset of gain clamping at threshold. The exciton polariton laser is distinctly different from an optical laser because of its density-dependent scattering mechanism. The rate equations, taking into account phonon-assisted polariton emission and the polariton-reservoir exciton scattering rate, explain the measurement results well.

引用

页码：R1789 / R1792

页数：4

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