Nonlinear optical and all-optical switching studies of palladium (II) complex

被引：30
作者：
Manjunatha, K. B. [1 ]
Dileep, R. [2 ]
Umesh, G. [1 ]
Bhat, B. Ramachandra [2 ]
机构：
[1] Natl Inst Technol Karnataka, Dept Phys, Mangalore 575025, India
[2] Natl Inst Technol Karnataka, Dept Chem, Mangalore 575025, India
来源：
MATERIALS LETTERS | 2013年 / 105卷
关键词：
NLO; Organic; Optical materials and properties; Z-scan; CONJUGATED POLYMER; PHTHALOCYANINES; SPECTRA;
D O I：
10.1016/j.matlet.2013.03.076
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Palladium complex with Schiff-base (PdL) was synthesized and composite films were fabricated on glass substrates by the spin coating technique. Z-scan and degenerate four wave mixing (DFWM) studies on the complex were performed using Q-switched Nd:YAG 7 ns laser pulses at 532 nm to reveal the third-order nonlinear optical (NLO) parameters. The third-order NLO susceptibility (chi((3)) and second-order hyperpolarizability (gamma(h)) in film form are estimated to be of the order of 10(-11) and 10(-30) esu respectively. Large nonlinear absorption (NLA) due to reverse-saturable absorption (RSA) in the complex exhibits good optical power limiting (OPL) performance. All-optical switching (AOS) experiments were performed using the pump-probe method. The Z-scan investigations reveal that the switching is caused by excited-state absorption (ESA) of the He-Ne laser. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：173 / 176
页数：4
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