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Z-scan studies on porphyrin derivative

DSpace at IIT Bombay

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Title Z-scan studies on porphyrin derivative
 
Creator KANDASAMY, K
RAO, KD
DESHPANDE, R
PUNTAMBEKAR, PN
SINGH, BP
SHETTY, SJ
SRIVASTAVA, TS
 
Subject 3rd-order optical nonlinearities
 
Description The nonlinear optical properties of a porphyrin derivative (T 3,4, BCEMPP) doped in boric acid glass were probed using the Z-scan technique at different argon-ion laser wavelengths. The nonlinear transmission characteristics exhibit saturable absorption at 457.9 nm and 476.5 nm while they are dominated by excited state absorption at 488.0 nm. The experimental observations are explained by using the four-level saturable absorber model. Saturation intensity, excited-state absorption cross-section, light-induced changes in the absorption and the refractive index along with its sign were determined at these argon-ion laser wavelengths. Further, optical limiting characteristics of this sample were studied. The observed limiting action is consistent with the Z-scan studies.
 
Publisher SPRINGER VERLAG
 
Date 2011-08-30T10:46:29Z
2011-12-26T12:58:54Z
2011-12-27T05:49:36Z
2011-08-30T10:46:29Z
2011-12-26T12:58:54Z
2011-12-27T05:49:36Z
1997
 
Type Article
 
Identifier APPLIED PHYSICS B-LASERS AND OPTICS, 64(4), 479-484
0946-2171
http://dx.doi.org/10.1007/s003400050202
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12286
http://hdl.handle.net/10054/12286
 
Language en