Title :
Beam shaping in quantum cascade ring lasers
Author :
E. Mujagic;L. K. Hoffmann;S. Schartner;M. Nobile;H. Detz;W. Schrenk;M. P. Semtsiv;W. T. Masselink;G. Strasser
Author_Institution :
Institute for Solid State Electronics, TU Vienna, 1040, Austria
fDate :
5/1/2009 12:00:00 AM
Abstract :
Mid-infrared beam shaping is demonstrated by using grating coupled surface emitting quantum cascade ring lasers. The devices allow for far-field tuning, ranging from highly symmetric spot-to ring-shaped beam patterns, depending on the grating period.
Keywords :
"Quantum cascade lasers","Laser beams","Ring lasers","Surface emitting lasers","Gratings","Optical resonators","Optical surface waves","Laser tuning","Stimulated emission","Optical feedback"
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Electronic_ISBN :
2160-9004
DOI :
10.1364/CLEO.2009.CThT4
