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| 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 |
| Appears in Collections: | Article
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