Share Email Print
cover

Proceedings Paper

Polarization selection in external-cavity birefringent vertical-cavity surface-emitting lasers
Author(s): Angel Valle; Luis Pesquera; Jaume Dellunde; Keith Alan Shore
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Calculations are reported of the effect of weak optical feedback on the polarization properties of birefringent vertical-cavity surface emitting lasers (VCSELs) in an external cavity configuration. Attention is focused on the competition between two orthogonal polarization of the fundamental transverse mode of the weakly index VCSEL. Ohmic heating effects on polarization selection and sensitivity of external cavity VCSELs are analyzed. We show that control of the emission polarization selection and sensitivity of external cavity VCSELs are analyzed. We show that control of the emission polarization can be exercised even for very small external reflectivities by appropriate choice of optical feedback delays. The range of currents in which a particular polarization is selected narrows as thermal effects become important. A controlled displacement of the external reflector with respect to the laser can maintain the polarization over a wide current range in the presence of thermal effects. The polarization selectivity is shown to be dependent upon the strength of optical feedback. Polarization is also shown to be highly sensitive to small changes in optical feedback delay and to very small unwanted reflections.

Paper Details

Date Published: 20 April 1998
PDF: 11 pages
Proc. SPIE 3286, Vertical-Cavity Surface-Emitting Lasers II, (20 April 1998); doi: 10.1117/12.305458
Show Author Affiliations
Angel Valle, Univ. de Cantabria (Spain)
Luis Pesquera, Univ. de Cantabria (Spain)
Jaume Dellunde, Univ. de Barcelona (Spain)
Keith Alan Shore, Univ. of Wales/Bangor (United Kingdom)


Published in SPIE Proceedings Vol. 3286:
Vertical-Cavity Surface-Emitting Lasers II
Kent D. Choquette; Robert A. Morgan, Editor(s)

© SPIE. Terms of Use
Back to Top