By Topic

Polarization switching in vertical-cavity surface emitting lasers observed at constant active region temperature

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Chilla, J.L.A. ; Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO, USA ; Martin-Regalado, J. ; Rocca, J.J. ; Brusenbach, P.

We report a systematic study of the polarization switching behavior during single mode emission in gain-guided VCSELs. An explanation for polarization switching in VCSELs has been offered based on the fact that self heating of the devices by the injected current changes the relative spectral alignment between the laser gain and the cavity resonances of nondegenerate polarization states. A theoretical model including magnetic sub-levels of the conduction and heavy-hole valence bands in a quantum-well VCSEL predicts additional polarization switching mechanisms that occur even when the active region temperature is kept constant. We show experimental evidence of such polarization switching at constant active region temperature. The lasers used in this study are proton-implanted AlGaAs/GaAs multiple quantum well VCSELs on a linear array of devices with active region diameter of 15 /spl mu/m and top contact window diameter of 12 /spl mu/m, operating around 850 nm.

Published in:

Device Research Conference Digest, 1997. 5th

Date of Conference:

23-25 June 1997