Observation of a laserlike transition in a microcavity exciton polariton system

Stanley Pau; Hui Cao; Joseph Jacobson; Gunnar Björk; Yoshihisa Yamamoto; Atac Imamoğlu

doi:10.1103/PhysRevA.54.R1789

Observation of a laserlike transition in a microcavity exciton polariton system

Stanley Pau, Hui Cao, Joseph Jacobson, Gunnar Björk, Yoshihisa Yamamoto, Atac Imamoğlu

Optical Sciences, College of

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80 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	R1789-R1792
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	54
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.54.R1789
State	Published - Jan 1 1996

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ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Cite this

Pau, S., Cao, H., Jacobson, J., Björk, G., Yamamoto, Y., & Imamoğlu, A. (1996). Observation of a laserlike transition in a microcavity exciton polariton system. Physical Review A - Atomic, Molecular, and Optical Physics, 54(3), R1789-R1792. https://doi.org/10.1103/PhysRevA.54.R1789

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AU - Imamoğlu, Atac

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10.1103/PhysRevA.54.R1789