Ultrafast all-optical modulator for 1.5 μm controlled by Ti:Al2O3 laser

Ermolenko, M. V.; Buganov, O. V.; Tikhomirov, S. A.; Stankevich, V. V.; Gaponenko, S. V.; Shulenkov, A. S.
August 2010
Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p073113
Academic Journal
The concept of ultrafast light modulator for wavelength ∼1.5 μm controlled by fundamental harmonic of a Ti:Al2O3 laser has been demonstrated. The possibility of realization of this concept was experimentally confirmed. We have demonstrated strong spectrally wide nonlinear response in multilayer heterostructures based on GaAs/(AlGa)xOy with the relaxation time of 1–3 ps in the spectral range where both materials have negligible absorption.


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