DocumentCode :
1313377
Title :
Analysis of coupling coefficient between two vertical cavity surface emitting lasers for two-dimensional phase-locked array
Author :
Yoo, Hoi-Jun ; Hayes, J.R. ; Kwon, Young-shin
Author_Institution :
Bellcore, Red Bank, NJ, USA
Volume :
26
Issue :
13
fYear :
1990
fDate :
6/21/1990 12:00:00 AM
Firstpage :
896
Lastpage :
897
Abstract :
The coupling coefficient between two adjacent circular vertical cavity surface emitting lasers having an InGaAs strained quantum well active region ( lambda g=1 mu m) and a GaAs cavity has been analysed. The analysis was performed for Al0.3Ga0.7As cladding (n=3.325) and air (n=1). In order to obtain a coupling coefficient of 10-3, which is known for the stable phase locking of array, the laser separation must be less than 0.25 mu m for the lasers of radius 0.4 mu m with air cladding and be less than 0.72 mu m for the lasers of radius 1.2 mu m and Al0.3Ga0.7As cladding. Various structures of two-dimensional phase-locked arrays, such as periodic, circular and concentric circular arrays, can be realised by bringing lasers into close proximity, the separation value of which can be obtained from the analysis.
Keywords :
laser cavity resonators; laser theory; refractive index; semiconductor junction lasers; 0.25 to 1.2 micron; 1 micron; 2D arrays; Al 0.3Ga 0.7As cladding; GaAs cavity; InGaAs; air cladding; concentric circular arrays; coupling coefficient; laser separation; periodic array; semiconductor lasers; stable phase locking; strained quantum well active region; surface emitting lasers; two-dimensional phase-locked array; vertical cavity;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:19900585
Filename :
82833
Link To Document :
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