Title :
Wide ridge low-divergence metal-metal terahertz quantum cascade lasers
Author :
Fan, Jonathan A. ; Belkin, Mikhail A. ; Capasso, Federico ; Khanna, Suraj J. ; Lachab, Mohamed ; Davies, Giles ; Linfield, Edmund H.
Author_Institution :
Div. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA
Abstract :
We utilize plasmonic side-absorbers to enforce lasing in the TM00 mode in wide ridge metal-metal terahertz quantum cascade lasers, which results in improved power outcoupling and reduced far-field divergence for both surface- and edge-emitting devices.
Keywords :
laser beams; laser modes; quantum cascade lasers; submillimetre wave lasers; surface emitting lasers; waveguide lasers; TM00 mode; edge-emitting devices; far-field divergence; metal-metal waveguide; plasmonic side-absorbers; power outcoupling; surface-emitting devices; terahertz quantum cascade lasers; wide ridge low-divergence QCL laser; Laser modes; Optical surface waves; Optical waveguides; Plasmons; Power lasers; Quantum cascade lasers; Reflectivity; Semiconductor lasers; Temperature; Waveguide lasers; (140.3070) Infrared and far-infrared lasers; (140.3300) Laser beam shaping; (140.5965) Semiconductor lasers, quantum cascade;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
