Measurement of polarization dependence of two-photon absorption coefficient in InP using extended Z-scan technique for thick materials. (8th February 2018)

• Record Type: Journal Article
• Authors: Oishi, Masaki; Shinozaki, Tomohisa; Hara, Hikaru; Yamamoto, Kazunuki; Matsusue, Toshio; Bando, Hiroyuki
• Is Part Of: Japanese journal of applied physics. Volume 57:Number 3(2018)
• Publication Date: 2018-02-08
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.57.030306
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: The two-photon absorption coefficient β in InP has been measured in the wavelength range of 1640 to 1800 nm by the Z-scan technique in relatively thick materials. The values of β have been evaluated from the fit to the equation including the spatial and temporal profiles of the focused Gaussian beam. The polarization dependence of β has also been measured. The dependence has been expressed very well by the expression of β with the imaginary part of the third-order nonlinear susceptibility tensor χ (3) .