DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12936

Title: Resonant nonlinear optical studies on porphyrin derivatives
Authors: KANDASAMY, K
PUNTAMBEKAR, PN
SINGH, BP
SHETTY, SJ
SRIVASTAVA, TS
Keywords: polymer
Issue Date: 1997
Publisher: WORLD SCIENTIFIC PUBL CO PTE LTD
Citation: JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS, 6(3), 361-375
Abstract: The nonlinear optical properties of three porphyrin derivatives (T3,4 BCEMPP, T4 CEMPP and TPP) doped in boric acid glass were probed using the Z-scan technique at different argon-ion laser wavelengths. The nonlinear transmission characteristics of T3,4 BCEMPP and T4 CEMPP exhibit saturable absorption at 457.9 nm and 476.5 nm while these are dominated by excited state absorption at 488.0 nm. However, in the case of TPP, the excited state absorption dominates the nonlinear characteristics except at 457.9 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. Furthermore, optical limiting characteristics of these samples were studied. The observed limiting action is consistent with the Z-scan studies.
URI: http://dx.doi.org/10.1142/S0218863597000277
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12936
http://hdl.handle.net/10054/12936
ISSN: 0218-1991
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback