Title :
Spectral linewidth narrowing in monolithic grating-surface-emitting laser arrays
Author :
Carlson, N.W. ; Bour, D.P. ; Evans, G.A. ; Liew, S.K.
Author_Institution :
David Sarnoff Res. Center, Princeton, NJ, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
Linewidth measurements of single-element grating-surface-emitting (GSE) lasers and coherent three-element GSE arrays have shown that a significant reduction in the spectral linewidth is possible in the case of the coherent array. A monolithic array of three injection-coupled GSE lasers had a linewidth less than 300 kHz, whereas a single-array element, operated by itself, typically had a linewidth of about 6 MHz.<>
Keywords :
diffraction gratings; light coherence; semiconductor junction lasers; spectral line breadth; 300 KHz; 6 MHz; Al/sub x/Ga/sub 1-x/As; coherent three-element GSE arrays; injection-coupled GSE lasers; laser linewidth; monolithic grating-surface-emitting laser arrays; single-element lasers; spectral linewidth narrowing; Bandwidth; Distributed Bragg reflectors; Gratings; Laser feedback; Laser modes; Optical arrays; Quantum well lasers; Reflectivity; Semiconductor laser arrays; Substrates;
Journal_Title :
Photonics Technology Letters, IEEE
