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Titolo:
Mid-infrared 'W' lasers
Autore:
Vurgaftman, I; Felix, CL; Bewley, WW; Stokes, DW; Bartolo, RE; Meyer, JR;
Indirizzi:
USN, Res Lab, Washington, DC 20375 USA USN Washington DC USA 20375USN, Res Lab, Washington, DC 20375 USA
Titolo Testata:
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
fascicolo: 1780, volume: 359, anno: 2001,
pagine: 489 - 503
SICI:
1364-503X(20010315)359:1780<489:M'L>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
WELL DIODE-LASERS; INTERBAND CASCADE LASERS; CONTINUOUS-WAVE OPERATION; PUMPING INJECTION CAVITY; BOND HEAT SINKING; QUANTUM-WELL; MU-M; ROOM-TEMPERATURE; HIGH-EFFICIENCY; AUGER LIFETIME;
Keywords:
mid-IR lasers; semiconductor lasers; type-II antimonide materials; 'W' active regions; vertical-cavity surface-emitting lasers; alpha-DFB lasers;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: Vurgaftman, I USN, Res Lab, Code 5613, Washington, DC 20375 USA USN Code 5613 Washington DC USA 20375 shington, DC 20375 USA
Citazione:
I. Vurgaftman et al., "Mid-infrared 'W' lasers", PHI T ROY A, 359(1780), 2001, pp. 489-503

Abstract

We review recent progress in the development of mid-infrared (mid-IR) quantum-well Iasers with type-II antimonide 'W' active regions. Optically pumped W lasers achieved continuous-wave (CW) operation nearly to room temperature, and CW output powers exceeding 0.5 W per facet at 77 K. Improvements inthe differential quantum efficiency were obtained by increasing the effective number of passes of the pump beam through the active region in the optical pumping injection cavity configuration. Near-diffraction-limited beam quality was achieved in the mid-IR using the angled-grating distributed feedback (alpha -distributed feedback (DFB)) approach with a W active region. Single-longitudinal-mode operation was demonstrated by vertical-cavity surface-emitting lasers emitting at lambda = 2.9-3.0 mum Broadened-waveguide W diode lasers recently operated at room temperature in pulsed mode and up to 195 K CW. A slope efficiency exceeding unity was achieved using the interband cascade laser approach with a W active region.

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Documento generato il 04/07/20 alle ore 18:32:43