CUED Publications database

Post-processing of vertical-cavity surface-emitting lasers for transverse mode and polarization control

Raddatz, L and Dowd, P and Sumaila, Y and White, IH and Penty, RV and Heard, PJ and Allen, GC and Tan, MRT and Wang, SY (1997) Post-processing of vertical-cavity surface-emitting lasers for transverse mode and polarization control. Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 11. p. 231. ISSN 1092-8081

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Abstract

The operation on how high quality single-mode operation can be readily attained on etching circles in multimode devices is discussed. Arrays of such spots can also be envisaged. Control of the polarization state is also achieved by use of deep line etches. The output filaments and beam shapes of the conventional multimode vertical cavity surface emitting lasers (VCSEL) is shown to be engineered in terms of their positions, widths, and polarizations by use of focused ion beam etching (FIBE). Several GaAs quantum well top-emitting devices with cavity diameters of 10 μm and 18 μm were investigated.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:44
Last Modified: 27 Nov 2014 19:23
DOI: