Share Email Print
cover

Proceedings Paper

All-optical two-mode switching in semiconductor ring lasers
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We have theoretically investigated the bifurcation scenario that leads to the emergence of a bistable regime in a two-mode model for a Semiconductor Ring Laser. The bistability takes place between two quasi-unidirectional solutions for the electric field, which are selected as stable solutions via gain-crossaturation, for well-above threshold operating conditions. Furthermore, we analyzed the switching properties of a single Semiconductor Ring Laser (SRL) operating in the bistable regime, under coherent optical pulse injection, in view of the possible implementation of a single SRL an optically adressable memory element. The result is that the response time and the minimum switching energy respectively attain values the order of a few tenth of ps, and 1 fJ. Those values are espected to scale down with the device radius, due to the consequent decreasing of the cavity flight time. We have observed that the fast switching dynamic is due to an energy redistribution process between the two counterpropagating modes, that does not involve the (slow) carrier density through field-medium energy exchange processes. This allows to attain time scales much faster than the typical limit represented by the inverse of relaxation oscillation frequency.

Paper Details

Date Published: 17 April 2006
PDF: 6 pages
Proc. SPIE 6184, Semiconductor Lasers and Laser Dynamics II, 618408 (17 April 2006); doi: 10.1117/12.661470
Show Author Affiliations
Alessandro Scirè, Univ. de les Illes Balears (Spain)
Marc Sorel, Univ. of Glasgow (United Kingdom)
Guido Giuliani, Univ. di Pavia (Italy)
Pere Colet, Univ. de les Illes Balears (Spain)
Toni Pérez, Univ. de les Illes Balears (Spain)
Claudio R. Mirasso, Univ. de les Illes Balears (Spain)


Published in SPIE Proceedings Vol. 6184:
Semiconductor Lasers and Laser Dynamics II
Daan Lenstra; Markus Pessa; Ian H. White, Editor(s)

© SPIE. Terms of Use
Back to Top