Interband cascade laser emitting >1 photon per injected electron

作者：Christopher L. Felix, W. W. Bewley, I. Vurgaftman, Jerry R. Meyer, Di Zhang, Chi‐Wei Lin, Rui Q. Yang, S. S. Pei · 发表于：IEEE Photonics Technology Letters · 年份：1997 · DOI：10.1109/68.634699 · 被引用次数：63 · 研究领域：Spectroscopy and Laser Applications、Laser Design and Applications、Semiconductor Lasers and Optical Devices

A 22-stage interband cascade laser with a "W" active region for enhanced gain has exhibited lasing at /spl lambda/=3.0 μm. Threshold current densities are lower than the best reported intersubband quantum cascade laser results at all T up to the maximum lasing temperature of 225 K. At 100 K, output powers up to 430 mW are observed, and the slope of 274 mW/A per facet for high injection levels corresponds to a quantum efficiency of 1.3 photons emitted for every injected electron.