Nonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix

P. Poornesh, Pramod K. Hegde, G. Umesh, M. G. Manjunatha, K. B. Manjunatha, A. V. Adhikari

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

An experimental investigation of the third-order nonlinear optical properties of new poly{2-{5-[3,4-ditetradecyloxy-5-(1,3,4-oxadiazol-2-yl)thiophen-2-yl]-1,3,4-oxadiazol-2-yl}pyridine} (P) in tetrahydrofuran (THF) solution and in solid poly(methylmethacrylate) (PMMA) matrix, by Z-scan technique is reported. The Z-scan traces reveal that the composite films exhibit large negative nonlinear refractive index of the order 10-10 esu. The excited-state absorption cross-section was found to be larger than the ground-state absorption indicating that the operating nonlinear process is reverse saturable absorption (RSA). The new polymer P exhibits good optical power limiting properties in the nanosecond regime in solution and as well in solid PMMA matrix.

Original languageEnglish
Pages (from-to)230-236
Number of pages7
JournalOptics and Laser Technology
Volume42
Issue number1
DOIs
Publication statusPublished - 01-02-2010

Fingerprint

Methylmethacrylate
Thiophenes
Conjugated polymers
Thiophene
thiophenes
solid solutions
polymers
matrices
tetrahydrofuran
absorption cross sections
pyridines
Composite films
refractivity
Excited states
optical properties
Pyridine
Ground state
composite materials
ground state
Refractive index

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Poornesh, P. ; Hegde, Pramod K. ; Umesh, G. ; Manjunatha, M. G. ; Manjunatha, K. B. ; Adhikari, A. V. / Nonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix. In: Optics and Laser Technology. 2010 ; Vol. 42, No. 1. pp. 230-236.
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Nonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix. / Poornesh, P.; Hegde, Pramod K.; Umesh, G.; Manjunatha, M. G.; Manjunatha, K. B.; Adhikari, A. V.

In: Optics and Laser Technology, Vol. 42, No. 1, 01.02.2010, p. 230-236.

Research output: Contribution to journalArticle

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AU - Hegde, Pramod K.

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AU - Adhikari, A. V.

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