Title :
Internal focus 980 nm unstable resonator laser diodes
Author :
Corbett, B. ; Lambkin, P. ; Justice, J. ; Deischel, E. ; Unger, P.
Author_Institution :
Photonics Group, Nat. Microelectron. Res. Centre, Cork, Ireland
Abstract :
Unstable laser resonators can make use of a large mode volume while retaining a single mode for the resonator thereby overcoming limitations associated with narrow aperture lasers. Our half-symmetric geometry is shown and contains an etched circular mirror and a tapered metal contact pattern to follow the desired mode. The output is taken from the cleaved facet and results in an astigmatism between the lateral and transverse beam propagation. The devices are fabricated from epitaxial material with a single quantum well.
Keywords :
infrared sources; laser beams; laser cavity resonators; laser modes; laser stability; laser transitions; optical focusing; quantum well lasers; semiconductor lasers; 980 nm; cleaved facet; epitaxial material; etched circular mirror; half-symmetric geometry; internal focus 980 nm unstable resonator laser diodes; large mode volume; lateral beam propagation; real internal focus; single mode; single quantum well laser; tapered metal contact pattern; transverse beam propagation; unstable laser resonators; Apertures; Diode lasers; Etching; Geometrical optics; Laser beams; Laser modes; Mirrors; Molecular beam epitaxial growth; Optical propagation; Vision defects;
Conference_Titel :
Lasers and Electro-Optics Society, 2002. LEOS 2002. The 15th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7500-9
DOI :
10.1109/LEOS.2002.1159473
