Investigation of third-order nonlinear optical properties of pyrazoline-doped polyvinyl alcohol films

K. Janardhana, V. Ravindrachary, P. C. Rajesh Kumar, Ismayil

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A 2-pyrazoline,3-(phenyl)-5-(4-N,N-dimethylaminophe nyl)-1H-2-pyrazoline (PDAP) was synthesized and characterized by Fourier transform infrared, nuclear magnetic resonance, ultraviolet (UV)-visible, and Z-scan techniques. The PDAP-doped polyvinyl alcohol composite films were prepared by solvent casting method using dimethylformamide as solvent. The optical properties of the composites were studied using UV-visible, steady state fluorescence, single beam Z-scan technique and degenerate four wave mixing (DFWM) technique. The optical constants such as band gap and optical activation energy were evaluated. The steady state fluorescence data showed both emission peak wavelengths and intensity change with PDAP-doping level in the composites. The open aperture Z-scan of the composite films displayed reverse saturable absorption. A self-focusing effect was observed under closed aperture configuration and the nonlinear refractive index of the film was observed increasing with the increase of doping. The third-order nonlinear susceptibility was compared with that obtained with picoseconds pulses through DFWM technique. The thermogravimetry analysis shows that the composites are thermally stable up to 260°C. POLYM. ENG. SCI., 2013. © 2013 Society of Plastics Engineers

Original languageEnglish
Pages (from-to)1958-1967
Number of pages10
JournalPolymer Engineering and Science
Volume53
Issue number9
DOIs
Publication statusPublished - 01-09-2013

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Polyvinyl Alcohol
Polyvinyl alcohols
Optical properties
Four wave mixing
Composite films
Composite materials
Fluorescence
Doping (additives)
Dimethylformamide
Optical constants
Thermogravimetric analysis
Refractive index
Fourier transforms
Casting
Energy gap
Activation energy
Nuclear magnetic resonance
Plastics
Infrared radiation
Engineers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Janardhana, K. ; Ravindrachary, V. ; Rajesh Kumar, P. C. ; Ismayil. / Investigation of third-order nonlinear optical properties of pyrazoline-doped polyvinyl alcohol films. In: Polymer Engineering and Science. 2013 ; Vol. 53, No. 9. pp. 1958-1967.
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Investigation of third-order nonlinear optical properties of pyrazoline-doped polyvinyl alcohol films. / Janardhana, K.; Ravindrachary, V.; Rajesh Kumar, P. C.; Ismayil.

In: Polymer Engineering and Science, Vol. 53, No. 9, 01.09.2013, p. 1958-1967.

Research output: Contribution to journalArticle

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N2 - A 2-pyrazoline,3-(phenyl)-5-(4-N,N-dimethylaminophe nyl)-1H-2-pyrazoline (PDAP) was synthesized and characterized by Fourier transform infrared, nuclear magnetic resonance, ultraviolet (UV)-visible, and Z-scan techniques. The PDAP-doped polyvinyl alcohol composite films were prepared by solvent casting method using dimethylformamide as solvent. The optical properties of the composites were studied using UV-visible, steady state fluorescence, single beam Z-scan technique and degenerate four wave mixing (DFWM) technique. The optical constants such as band gap and optical activation energy were evaluated. The steady state fluorescence data showed both emission peak wavelengths and intensity change with PDAP-doping level in the composites. The open aperture Z-scan of the composite films displayed reverse saturable absorption. A self-focusing effect was observed under closed aperture configuration and the nonlinear refractive index of the film was observed increasing with the increase of doping. The third-order nonlinear susceptibility was compared with that obtained with picoseconds pulses through DFWM technique. The thermogravimetry analysis shows that the composites are thermally stable up to 260°C. POLYM. ENG. SCI., 2013. © 2013 Society of Plastics Engineers

AB - A 2-pyrazoline,3-(phenyl)-5-(4-N,N-dimethylaminophe nyl)-1H-2-pyrazoline (PDAP) was synthesized and characterized by Fourier transform infrared, nuclear magnetic resonance, ultraviolet (UV)-visible, and Z-scan techniques. The PDAP-doped polyvinyl alcohol composite films were prepared by solvent casting method using dimethylformamide as solvent. The optical properties of the composites were studied using UV-visible, steady state fluorescence, single beam Z-scan technique and degenerate four wave mixing (DFWM) technique. The optical constants such as band gap and optical activation energy were evaluated. The steady state fluorescence data showed both emission peak wavelengths and intensity change with PDAP-doping level in the composites. The open aperture Z-scan of the composite films displayed reverse saturable absorption. A self-focusing effect was observed under closed aperture configuration and the nonlinear refractive index of the film was observed increasing with the increase of doping. The third-order nonlinear susceptibility was compared with that obtained with picoseconds pulses through DFWM technique. The thermogravimetry analysis shows that the composites are thermally stable up to 260°C. POLYM. ENG. SCI., 2013. © 2013 Society of Plastics Engineers

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