TITLE

Ultrafast all-optical modulation in GaAs photonic crystal cavities

AUTHOR(S)
Husko, Chad; De Rossi, Alfredo; Combrié, Sylvain; Tran, Quynh Vy; Raineri, Fabrice; Wong, Chee Wei
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/12/2009, Vol. 94 Issue 2, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate all-optical modulation based on ultrafast optical carrier injection in a GaAs photonic crystal cavity using a degenerate pump-probe technique. The observations agree well with a coupled-mode model incorporating all relevant nonlinearities. The low switching energy (∼120 fJ), small energy absorption (∼10 fJ), fast on-off response (∼15 ps), limited only by carrier lifetime, and a minimum 10 dB modulation depth suggest practical all-optical switching applications at high repetition rates.
ACCESSION #
36258461

 

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