Title :
Optimization of VCSELs for Self-Mixing Sensing
Author :
Larsson, David ; Yvind, Kresten ; Chung, Il-Sug ; Hvam, JØrn M.
Author_Institution :
Dept. of Photonics Eng., Tech. Univ. of Denmark, Lyngby, Denmark
fDate :
5/15/2010 12:00:00 AM
Abstract :
We have simulated the variations in optical output power from a vertical-cavity surface-emitting laser (VCSEL) subject to self-mixing feedback, which is very important for applications in sensing. In order to maximize the self-mixing signal for a given feedback we have optimized the epitaxial design of the VCSEL. The most important parameters are the number of quantum wells (gain), the number of Bragg mirrors (reflection), and the detector position.
Keywords :
III-V semiconductors; distributed Bragg reflector lasers; gallium arsenide; gallium compounds; indium compounds; laser cavity resonators; laser feedback; laser mirrors; optical sensors; photodetectors; quantum well lasers; surface emitting lasers; Bragg mirrors; InGaAs-GaAsP; VCSEL; epitaxial design; quantum wells; self-mixing feedback; self-mixing sensing; self-mixing signal; vertical-cavity surface-emitting laser; Self-mixing; sensing; vertical-cavity surface-emitting laser (VCSEL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2043089
