Ultrafast Nonlinear Optical and Optical Limiting Properties of Phthalocyanine Thin Films Studied Using Z-Scan
作者： Soma Venugopal Rao , Puliparambil Thilakan Anusha , Turaga Shuvan Prashant , Debasis Swain , Surya P. Tewari
关键词:
摘要: We have investigated the nonlinear optical properties, limiting thresholds, and figures of merits for five different phthalocyanine thin films, achieved through doping in PMMA polymer, using Z-scan technique at 800 nm with 2 ps laser pulse excitation. From open-aperture data we derived that these molecules exhibit strong two photon absorption (2PA) coefficients range 15 - 200 cm/GW. also estimated sign magnitude real part third order nonlinearity closed aperture data. Preliminary femtosecond pump-probe suggests lifetimes excited states are sub-100 regime all film form. Our studies provide concrete evidence phthalocyanines prospective candidates multi-photon imaging applications.
acrhem.org 参考文章(46)
Nonlinear Optical and Electroactive Polymers Plenum Press. ,(1988) , 10.1007/978-1-4613-0953-6
Conjugated polymeric materials : opportunities in electronics, optoelectronics and molecular electronics Kluwer Academic Publishers. ,(1990) , 10.1007/978-94-009-2041-5
M. Yamashita, F. Inui, K. Irokawa, A. Morinaga, T. Tako, A. Mito, H. Moriwaki, Nonlinear optical properties of tin–phthalocyanine thin films Applied Surface Science. ,vol. 130, pp. 883- 888 ,(1998) , 10.1016/S0169-4332(98)00170-6
Michel Fournier, Claude Pépin, Daniel Houde, René Ouellet, Johan E. van Lier, Ultrafast studies of the excited-state dynamics of copper and nickel phthalocyanine tetrasulfonates: potential sensitizers for the two-photon photodynamic therapy of tumors. Photochemical and Photobiological Sciences. ,vol. 3, pp. 120- 126 ,(2004) , 10.1039/B302787B
A. Gadalla, O. Crégut, M. Gallart, B. Hönerlage, J.-B. Beaufrand, M. Bowen, S. Boukari, E. Beaurepaire, P. Gilliot, Ultrafast Optical Dynamics of Metal-Free and Cobalt Phthalocyanine Thin Films Journal of Physical Chemistry C. ,vol. 114, pp. 4086- 4092 ,(2010) , 10.1021/JP911438Y
Tsuyoshi Asahi, Naoto Tamai, Tatsuya Uchida, Noburo Shimo, Hiroshi Masuhara, None, Nonlinear excited-state dynamics of a thin copper phthalocyanine film by femtosecond transient grating spectroscopy Chemical Physics Letters. ,vol. 234, pp. 337- 342 ,(1995) , 10.1016/0009-2614(95)00047-8
Shaoli Fang, Hirokazu Tada, Shinro Mashiko, Enhancement of the third-order nonlinear optical susceptibility in epitaxial vanadyl-phthalocyanine films grown on KBr Applied Physics Letters. ,vol. 69, pp. 767- 769 ,(1996) , 10.1063/1.117885
Shaoli Fang, Hajime Hoshi, Keiichi Kohama, Yusei Maruyama, NONLINEAR OPTICAL CHARACTERISTICS OF VANADYL PHTHALOCYANINE THIN FILM GROWN BY THE MOLECULAR BEAM EPITAXIAL METHOD The Journal of Physical Chemistry. ,vol. 100, pp. 4104- 4110 ,(1996) , 10.1021/JP953093T
T-H. Tran-Thi, T. Fournier, A.Yu Sharonov, N. Tkachenko, H. Lemmetyinen, P. Grenier, K-D. Truong, D. Houde, Photophysical, photoelectrical and non-linear optical properties of porphyrin-phthalocyanine assemblies in Langmuir-Blodgett films Thin Solid Films. ,vol. 273, pp. 8- 13 ,(1996) , 10.1016/0040-6090(95)06763-9
Hari Singh Nalwa, Atsushi Kakuta, Third-order non-linear optical properties of donor- and acceptor-substituted metallophthalocyanines Thin Solid Films. ,vol. 254, pp. 218- 223 ,(1995) , 10.1016/0040-6090(94)06260-R