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High speed and high efficient all optical switch using exciton-polaritons in GaAs thin films

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5 Author(s)
Tomita, N. ; Centre of Adv. Technol. R&D, Mitsubishi Electr. Corp., Hyogo, Japan ; Akiyama, K. ; Nishimura, T. ; Nomura, Y.
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Summary form only given. We have been investigated optical properties of precisely size-controlled GaAs thin films, where exciton motion is quantized and non-local interaction between excitons and photons should be considered. We observed an enhanced third-order nonlinear optical response for a 110 nm-thick GaAs film using degenerate four-wave mixing. The observed nonlinear response was 25 times larger than that of a 1 /spl mu/m-thick film. This result agrees with a theoretical proposal of enhanced nonlinear optical responses of exciton-polaritons in a thin film with a particular thickness. In this paper, we demonstrate, for the first time, optical switching using nonlinear optical responses of exciton-polaritons in a GaAs thin film.

Published in:

Quantum Electronics Conference, 2000. Conference Digest. 2000 International

Date of Conference:

10-15 Sept. 2000