Title :
Single-transverse-mode 3.4-mW emission of oxide-confined 780-nm VCSELs
Author :
Ueki, N. ; Sakamoto, A. ; Nakamura, T. ; Nakayama, H. ; Sakurai, J. ; Otoma, H. ; Miyamoto, Y. ; Yoshikawa, M. ; Fuse, M.
Author_Institution :
Corp. Res. Labs., Fuji Xerox Co. Ltd., Kanagawa, Japan
Abstract :
The authors have fabricated oxide-confined vertical-cavity surface-emitting lasers with metal apertures exhibiting a spatial mode filtering effect. Single-mode continuous-wave output is enhanced up to 3.4 mW by this effect for AlGaAs-based 780-nm vertical-cavity surface-emitting lasers with a 3.5-μm-diameter oxide aperture. From numerical calculations, the round-trip loss difference between zeroth- and first-order optical modes as a function of metal aperture size indicates that there is an optimum point; a 4-μm metal aperture size is suitable for higher order mode suppression of a 3.5-μm oxide aperture device.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; laser modes; optical losses; oxidation; quantum well lasers; spatial filters; surface emitting lasers; 3.4 mW; 3.5 mum; 4 mum; 780 nm; Al/sub 0.12/Ga/sub 0.88/As-Al/sub 0.3/Ga/sub 0.7/As; AlGaAs-based oxide-confined VCSEL; first-order optical mode; higher order mode suppression; metal apertures; oxide aperture; oxide-confined vertical-cavity surface-emitting lasers; round-trip loss difference; selective oxidation; single-mode continuous-wave output; single-transverse-mode emission; spatial mode filtering effect; zeroth-order optical mode; Apertures; Filtering; Laser modes; Optical devices; Optical filters; Optical interconnections; Optical surface waves; Oxidation; Surface emitting lasers; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
