玻色子级联激光器的提案。

Proposal for a bosonic cascade laser.

作者信息

Liew T C H, Glazov M M, Kavokin K V, Shelykh I A, Kaliteevski M A, Kavokin A V

机构信息

Division of Physics and Applied Physics, Nanyang Technological University, 637371 Singapore, Singapore.

Ioffe Phyical-Technical Institute of the RAS, 26, Polytechnicheskaya, St. Petersburg 194021, Russia and Spin Optics Laboratory, St. Petersburg State University, 1 Ul'anovskaya, St. Petersburg 198504, Russia.

出版信息

Phys Rev Lett. 2013 Jan 25;110(4):047402. doi: 10.1103/PhysRevLett.110.047402.

DOI:10.1103/PhysRevLett.110.047402

PMID:25166199

Abstract

We propose a concept of a quantum cascade laser based on transitions of bosonic quasiparticles (excitons) in a parabolic potential trap in a semiconductor microcavity. This laser would emit terahertz radiation due to bosonic stimulation of excitonic transitions. The dynamics of a bosonic cascade is strongly different from the dynamics of a conventional fermionic cascade laser. We show that populations of excitonic ladders are parity dependent and quantized if the laser operates without an external terahertz cavity.

摘要

我们提出了一种基于半导体微腔中抛物形势阱里玻色子准粒子（激子）跃迁的量子级联激光器概念。由于激子跃迁的玻色子受激作用，这种激光器将发射太赫兹辐射。玻色子级联的动力学与传统费米子级联激光器的动力学有很大不同。我们表明，如果激光器在没有外部太赫兹腔的情况下运行，激子阶梯的布居数依赖于宇称且是量子化的。