Nonlinear optical properties of lutetium and dysprosium bisphthalocyanines at 1550 nm with femto- and nanosecond pulse excitation

• Published in: Optical materials Vol. 64; pp. 13 - 17
• Main Authors: Plekhanov, A.I., Basova, T.V., Parkhomenko, R.G., Gürek, A.G.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2017
• Subjects: Bisphthalocyanines; Femto- and nanosecond pulse excitation; Nonlinear optical properties; Femto- and nanosecond pulse excitation; Nonlinear optical properties; Bisphthalocyanines
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2016.11.025

In this work, the nonlinear optical properties of unsubstituted lutetium (LuPc2) and dysprosium (DyPc2) bisphthalocyanines as well as octasubstituted Lu(PcR8)2 derivative with R=-S(C6H13) were studied at a wavelength of 1550 nm with 10 ns and 300 fs pulses. Based on Z-scan measurements the nonlinear absorption and refraction coefficient as well as the nature of nonlinear optical properties were analyzed for these materials. Open aperture Z-scan indicates strong two-photon absorption in all three bisphthalocyanines in nano- and femtosecond regimes. With good nonlinear optical coefficients, bisphthalocyanines of rare earth elements are expected to be promising materials for the creation of optical limiters. •Nonlinear optical properties of Lu and Dy phthalocyanine derivatives were studied at 1550 nm in ns and fs regimes.•The nonlinear absorption and refraction coefficients obtained by Z-scan were determined.•Among three investigated derivatives DyPc2 has shown the best nonlinear parameters.