Angled cavity broad area quantum cascade lasers

Y. Bai; S. Slivken; Q. Y. Lu; N. Bandyopadhyay; M. Razeghi

doi:10.1063/1.4747447

Angled cavity broad area quantum cascade lasers

Y. Bai^*, S. Slivken, Q. Y. Lu, N. Bandyopadhyay, M. Razeghi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

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 μm is demonstrated. This structure could be applied to a wide range of laser structures for power scaling along with spectral and spatial beam control.

Original language	English (US)
Article number	081106
Journal	Applied Physics Letters
Volume	101
Issue number	8
DOIs	https://doi.org/10.1063/1.4747447
State	Published - Aug 20 2012

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AU - Bai, Y.

AU - Slivken, S.

AU - Lu, Q. Y.

AU - Bandyopadhyay, N.

AU - Razeghi, M.

PY - 2012/8/20

Y1 - 2012/8/20

N2 - 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 μm is demonstrated. This structure could be applied to a wide range of laser structures for power scaling along with spectral and spatial beam control.

AB - 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 μm is demonstrated. This structure could be applied to a wide range of laser structures for power scaling along with spectral and spatial beam control.

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Angled cavity broad area quantum cascade lasers

Abstract

ASJC Scopus subject areas

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