Title :
Terahertz quantum cascade lasers with integrated plasmonic collimators
Author :
Yu, Nanfang ; Wang, Qi Jie ; Khanna, Suraj P. ; Li, Lianhe ; Davies, A. Giles ; Linfield, Edmund H. ; Capasso, Federico
Author_Institution :
Sch. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA, USA
Abstract :
We report collimation of THz quantum-cascade lasers by patterning plasmonic structures on laser facets. A beam divergence angle of ∼10 degrees and an increase of the collected power by a factor of ∼5 are demonstrated.
Keywords :
Apertures; Collimators; Gratings; Laser beams; Plasmons; Quantum cascade lasers; Semiconductor lasers; Surface waves; Vertical cavity surface emitting lasers; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
