Effect of polymer host on third order nonlinear optical properties of newly synthesized organic liquid crystal

Seetharam Shettigar, G. Umesh, P. Poornesh, Y. L N Murthy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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 languageEnglish
Title of host publicationICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings
DOIs
Publication statusPublished - 01-12-2007
EventICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Sousse, Tunisia
Duration: 06-12-200708-12-2007

Conference

ConferenceICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007
CountryTunisia
CitySousse
Period06-12-0708-12-07

Fingerprint

Liquid crystals
Optical properties
Molecules
Optical materials
Polymers
Excited states
Conformations
Charge transfer
Laser pulses
Photons
Doping (additives)
Wavelength
Geometry

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Shettigar, S., Umesh, G., Poornesh, P., & Murthy, Y. L. N. (2007). Effect of polymer host on third order nonlinear optical properties of newly synthesized organic liquid crystal. In ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings [4446920] https://doi.org/10.1109/ICTONMW.2007.4446920
Shettigar, Seetharam ; Umesh, G. ; Poornesh, P. ; Murthy, Y. L N. / Effect of polymer host on third order nonlinear optical properties of newly synthesized organic liquid crystal. ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings. 2007.
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Shettigar, S, Umesh, G, Poornesh, P & Murthy, YLN 2007, Effect of polymer host on third order nonlinear optical properties of newly synthesized organic liquid crystal. in ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings., 4446920, ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007, Sousse, Tunisia, 06-12-07. https://doi.org/10.1109/ICTONMW.2007.4446920

Effect of polymer host on third order nonlinear optical properties of newly synthesized organic liquid crystal. / Shettigar, Seetharam; Umesh, G.; Poornesh, P.; Murthy, Y. L N.

ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings. 2007. 4446920.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - 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.

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Shettigar S, Umesh G, Poornesh P, Murthy YLN. Effect of polymer host on third order nonlinear optical properties of newly synthesized organic liquid crystal. In ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings. 2007. 4446920 https://doi.org/10.1109/ICTONMW.2007.4446920