title: Crossover from polariton lasing to exciton lasing in a strongly coupled ZnO microcavity.
abstract: Unlike conventional photon lasing, in which the threshold is limited by the population inversion of the electron-hole plasma, the exciton lasing generated by exciton-exciton scattering and the polariton lasing generated by dynamical condensates have received considerable attention in recent years because of the sub-Mott density and low-threshold operation. This paper presents a novel approach to generate both exciton and polariton lasing in a strongly coupled microcavity (MC) and determine the critical driving requirements for simultaneously triggering these two lasing operation in temperature <140 K and large negative polariton-exciton offset (<-133 meV) conditions. In addition, the corresponding lasing behaviors, such as threshold energy, linewidth, phase diagram, and angular dispersion are verified. The results afford a basis from which to understand the complicated lasing mechanisms in strongly coupled MCs and verify a new method with which to trigger dual laser emission based on exciton and polariton.
authors.affiliation: Department of Photonics, National Chiao Tung University, Hsinchu 300, Taiwan.
authors.forename: Ying-Yu
authors.initials: YY
authors.lastname: Lai
authors.affiliation: Department of Photonics, National Chiao Tung University, Hsinchu 300, Taiwan.
authors.forename: Yu-Hsun
authors.initials: YH
authors.lastname: Chou
authors.affiliation: Department of Photonics, National Chiao Tung University, Hsinchu 300, Taiwan.
authors.forename: Yu-Pin
authors.initials: YP
authors.lastname: Lan
authors.affiliation: Department of Photonics, National Chiao Tung University, Hsinchu 300, Taiwan.
authors.forename: Tien-Chang
authors.initials: TC
authors.lastname: Lu
authors.affiliation: Department of Photonics, National Chiao Tung University, Hsinchu 300, Taiwan.
authors.forename: Shing-Chung
authors.initials: SC
authors.lastname: Wang
authors.affiliation: E. L. Ginzton Laboratroy, Stanford Univeristy, Stanford CA, 94305, USA.|National Institute of Informatics, Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan.
authors.forename: Yoshihisa
authors.initials: Y
authors.lastname: Yamamoto
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