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Nonlinear optical response of poly(p-phenylenevinylene): Role of photogenerated gap states

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Title Nonlinear optical response of poly(p-phenylenevinylene): Role of photogenerated gap states
 
Creator NAMPOOTHIRI, AVV
SINGH, BP
KUMAR, GR
 
Subject poly(para-phenylene vinylene)
transient photoconductivity
primary photoexcitations
conjugated polymers
self-diffraction
polyacetylene
absorption
relaxation
 
Description Third order nonlinear optical properties of Poly(p-phenylenevinylene) have been investigated at 532 nm using degenerate four wave mixing and Z-scan techniques. Intensity dependent absorption has been attributed to photogenerated gap states arising from one-photon pi-pi* transition, and the coefficient of nonlinear absorption has been estimated. The observed intensity dependence of the degenerate four wave mixing signal has been explained using four-level model involving gap state transitions.
 
Publisher WORLD SCIENTIFIC PUBL CO PTE LTD
 
Date 2011-09-02T01:21:50Z
2011-12-26T12:59:53Z
2011-12-27T05:52:57Z
2011-09-02T01:21:50Z
2011-12-26T12:59:53Z
2011-12-27T05:52:57Z
1998
 
Type Article
 
Identifier JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS, 7(4), 571-579
0218-1991
http://dx.doi.org/10.1142/S0218863598000429
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12926
http://hdl.handle.net/10054/12926
 
Language en