Abstract
We report the investigation of third order optical nonlinearity of 2,4,6-tri-(p-hyptoyoxylphenyl) pyrilium tetraborate doped PMMA using nanosecond laser pulses at 532nm wavelength by employing Z-Scan technique. To see the effect of polymer host, the results have been compared with the pure dopant. The material shows a large negative nonlinearity with real and imaginary parts of X(3) are - 3.31×10-14esu and 0.73×10 -14esu respectively. Excited state absorption cross-section is found to be 3.41×10-48 cm4.s/photon in PMMA host. The magnitude of third order nonlinear parameters increases when the compound is doped into PMMA matrix because of change in the conformation of chain geometry as a result of charge transfer processes. The values are comparable with a best known nonlinear liquid crystal molecule namely, 4-cyano-4'-n-pentylbiphenyl in the nematic phase. Hence, these molecules can be suitably used as nonlinear optical materials in PMMA matrix for device applications.
Original language | English |
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Title of host publication | ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings |
DOIs | |
Publication status | Published - 01-12-2007 |
Event | ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Sousse, Tunisia Duration: 06-12-2007 → 08-12-2007 |
Conference
Conference | ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 |
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Country/Territory | Tunisia |
City | Sousse |
Period | 06-12-07 → 08-12-07 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering