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Large Third Order Nonlinear Optical Response of Exciton by Controlling the Thickness of GaAs Thin Films
Koichi AKIYAMA Nobuyuki TOMITA Yoshinori NOMURA Toshiro ISU Hajime ISHIHARA Kikuo CHO
IEICE TRANSACTIONS on Electronics
Publication Date: 2000/06/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks)
Category: Switches and Novel Devices
nonlinear optical response, GaAs thin film, exciton, four-wave mixing,
Full Text: PDF(183KB)>>
We demonstrate a large nonlinear optical response of GaAs thin films using degenerate four-wave mixing (DFWM) with picosecond pulses. The obtained DFWM signal is thickness-dependent and peaks at around 110 nm. The nonlocal theory fully explains these results.