Abstract
Efficiency enhance of writing information in 3D optical memory devices by using the second harmonic generation inthin nonlinear organic filmsS.A. Krikunov, S.A. Magnitskii, DV. Malakhov, NT. Sokoluk, Z1LS. TursynovMoscow State University, International Laser CenterVorob'evy Gory, Moscow 1 19899, RussiaABSTRACTNew (two-stage) method of writing information in 3D optical memory devices, using second harmonic generation(SHG) of femtosecond laser pulses in thin nonlinear films, and new informative (two-component) media consisted ofnonlinear-optical and photochromic materials, was realized. As a result for this two-component media the 32x increasing ofwriting efficiency was obtained. It was shown, that the best photochromic substances (without additional requirement fortwo-photon absorption cross sections) can be used in 3D optical memory devices.Keywords: two-photon absorption, photochromic materials, second harmonic generation, 3-dimensinal optical memory
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