Title :
Post-fabrication wavelength selection and spectral narrowing of Quantum Cascade lasers via application of a shallow distributed Bragg reflector
Author :
Sadeghi, Arash ; Liu, Peter Q. ; Gmachl, Claire F.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
Abstract :
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.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; ion beam applications; laser accessories; laser beams; milling; optical design techniques; optical fabrication; quantum cascade lasers; spectral line narrowing; Fabry-Perot type QC laser; full-width half-maximum; ion milled Bragg reflector; laser ridge; post fabrication wavelength selection; quantum cascade lasers; shallow distributed Bragg reflector; spectral narrowing; Cavity resonators; Gratings; Laser applications; Laser modes; Measurement by laser beam; Quantum cascade lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
