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) |
|---|---|
| Journal | Physical Review A |
| Volume | 54 |
| Issue number | 3 |
| State | Published - Sep 1996 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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Observation of a laserlike transition in a microcavity exciton polariton system. / Pau, Stanley K H; Cao, Hui; Jacobson, Joseph; Björk, Gunnar; Yamamoto, Yoshihisa; Imamoǧlu, Atac.
In: Physical Review A, Vol. 54, No. 3, 09.1996.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Observation of a laserlike transition in a microcavity exciton polariton system
AU - Pau, Stanley K H
AU - Cao, Hui
AU - Jacobson, Joseph
AU - Björk, Gunnar
AU - Yamamoto, Yoshihisa
AU - Imamoǧlu, Atac
PY - 1996/9
Y1 - 1996/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0000778155&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000778155&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0000778155
VL - 54
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 3
ER -