Coulomb-correlated electron-hole plasma and gain in a quantum-wire laser of high uniformity

Article

关键词: ONE-DIMENSIONAL EXCITONS;    SOMMERFELD FACTORS;    OPTICAL-SPECTRA;    BINDING-ENERGY;    ABSORPTION;    EMISSION;    GAAS;    RENORMALIZATION;    DEPENDENCE;    OVERGROWTH;   

DOI  :  10.1103/PhysRevB.67.041302

来源: SCIE

【 摘 要 】

A multi-quantum-wire laser operating in the one-dimensional (1D) ground state has been achieved in a very high uniformity structure that shows free-exciton emission with unprecedented narrow width and low lasing threshold. Under optical pumping, the spontaneous emission evolves from a sharp free exciton peak to a redshifted broad band. The lasing photon energy occurs about 5 meV below the free exciton. The observed shift excludes free excitons in lasing and our results show that Coulomb interactions in the 1D electron-hole system shift the spontaneous emission and play significant roles in laser gain.

【 授权许可】

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