TY - JOUR
T1 - Observation of a laserlike transition in a microcavity exciton polariton system
AU - Pau, Stanley
AU - Cao, Hui
AU - Jacobson, Joseph
AU - Björk, Gunnar
AU - Yamamoto, Yoshihisa
AU - Imamoğlu, Atac
PY - 1996
Y1 - 1996
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.
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U2 - 10.1103/PhysRevA.54.R1789
DO - 10.1103/PhysRevA.54.R1789
M3 - Article
AN - SCOPUS:0000778155
SN - 1050-2947
VL - 54
SP - R1789-R1792
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
ER -