Angled cavity broad area quantum cascade lasers

作者：Bai Y^*; Slivken S; Lu Q Y; Bandyopadhyay N; Razeghi M

来源：Applied Physics Letters, 2012, 101(8): 081106.

DOI：10.1063/1.4747447

Angled cavity broad area quantum cascade lasers (QCLs) are investigated with surface grating-based distributed feedback (DFB) mechanisms. It is found that an angled cavity incorporating a one dimensional DFB with grating lines parallel to the laser facet offers the simplest solution for single mode and diffraction limited emission in the facet normal direction. A room temperature single mode QCL with the highest output power for wavelengths longer than 10 mu m is demonstrated. This structure could be applied to a wide range of laser structures for power scaling along with spectral and spatial beam control.

• 出版日期2012-8-20
• 单位西北大学