Title :
Electrically controlling beam pattern of THz quantum cascade lasers
Author :
Fathololoumi, S. ; Dupont, E. ; Razavipour, S.G. ; Laframboise, S.R. ; Wasilewski, Z.R. ; Ban, D. ; Liu, H.C.
Author_Institution :
Inst. for Microstruct. Sci., Nat. Res. Council of Canada, Ottawa, ON, Canada
Abstract :
An electrically controlled beam pattern technique for semi-insulating surface plasmon terahertz quantum cascade is presented. The near field and far field measurements confirm that the lasing THz beam is maneuvered by 25° in emission angle, when the current density changes from 1.9 kA/cm2 to 2.3 kA/cm2.
Keywords :
millimetre wave lasers; quantum cascade lasers; THz quantum cascade lasers; beam pattern control; far field measurements; near field field measurements; semi-insulating surface plasmon terahertz quantum cascade; Current measurement; Laser beams; Laser modes; Optical control; Optical surface waves; Optical waveguides; Plasmons; Quantum cascade lasers; Semiconductor lasers; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
