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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/12926

Title: Nonlinear optical response of poly(p-phenylenevinylene): Role of photogenerated gap states
Authors: NAMPOOTHIRI, AVV
SINGH, BP
KUMAR, GR
Keywords: poly(para-phenylene vinylene)
transient photoconductivity
primary photoexcitations
conjugated polymers
self-diffraction
polyacetylene
absorption
relaxation
Issue Date: 1998
Publisher: WORLD SCIENTIFIC PUBL CO PTE LTD
Citation: JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS, 7(4), 571-579
Abstract: 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.
URI: http://dx.doi.org/10.1142/S0218863598000429
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12926
http://hdl.handle.net/10054/12926
ISSN: 0218-1991
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