Second harmonic generation in thin Ge<Subscript>35</Subscript>Sb<Subscript>5</Subscript>S<Subscript>60</Subscript> films期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Second harmonic generation in thin Ge35Sb5S60 films

Authors:	S. Alexandrova I. A. Maslyanitsyn V. Pamukchieva V. B. Tsvetkov V. D. Shigorin

Affiliation:	1.Institute of Solid State Physics,Bulgarian Academy of Sciences,Sofia,Bulgaria;2.Prokhorov General Physics Institute,Russian Academy of Sciences,Moscow,Russia

Abstract:	Generation of the second optical harmonic is investigated in 250 to 1500-nm thick films of Ge₃₅Sb₅S₆₀ chalcogenide glass. It is shown that a decrease in quadratic optical susceptibility in thicker films can result from a decrease in the bulk contribution from the electric dipole to the susceptibility and can be used in nonlinear optical diagnostics of the films.

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