Application of a shallow distributed Bragg reflector ion-milled on a tenth of the laser ridge leads to spectral narrowing, a 10-fold reduction in full-width-half-maximum and ~12dB side mode suppression, of Fabry-Perot type QC lasers.
© 2012 OSA
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3425) Lasers and laser optics : Laser stabilization
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade
A. Sadeghi, P. Q. Liu, and C. Gmachl, "Post-fabrication wavelength selection and spectral narrowing of Quantum Cascade lasers via application of a shallow distributed Bragg reflector," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (online) (Optical Society of America, 2012), paper CF3K.4.
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