Journal of Optics

, Volume 42, Issue 2, pp 101–105 | Cite as

Two photon fluorescence spectra from MEH-PPV/Polystyrene based film waveguides

  • G. Sreelekha
  • G. Vidya
  • M. S. Ebin
  • K. Geetha
  • S. Sreeja
  • Rani Joseph
  • S. Pratapan
  • P. Radhakrishnan
  • C. P. G. Vallabhan
  • V. P. N. Nampoori
Research Article

Abstract

We report two photon fluorescence from free standing films of MEH-PPV blended with polystyrene under femto second irradiation. The MEH-PPV was synthesized, and purified several times in each step, so that we obtained the material of low molecular weight, high thermal stability and low polydispersity index. The two photon spectra exhibit two peaks, one at 600 nm and the other at 640 nm. The ratio of intensities between longer wavelength peak and shorter wavelength peak varies with concentration. These variations of relative intensities of two peaks can lead to many applications such as development of logic gates.

Keywords

Conjugated polymers Two photon fluorescence Dual peak emission Excited state symmetry 

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Copyright information

© Optical Society of India 2013

Authors and Affiliations

  • G. Sreelekha
    • 1
    • 2
  • G. Vidya
    • 3
  • M. S. Ebin
    • 1
  • K. Geetha
    • 2
    • 5
  • S. Sreeja
    • 2
  • Rani Joseph
    • 3
  • S. Pratapan
    • 4
  • P. Radhakrishnan
    • 1
    • 2
  • C. P. G. Vallabhan
    • 2
  • V. P. N. Nampoori
    • 2
  1. 1.Centre of Excellence in Lasers and Optoelectronics SciencesCochin University of Science and TechnologyCochin-22India
  2. 2.International School of PhotonicsCochin University of Science and TechnologyCochin-22India
  3. 3.Department of Polymer Science and Rubber TechnologyCochin University of Science and TechnologyCochin-22India
  4. 4.Department of Applied ChemistryCochin University of Science and TechnologyCochin-22India
  5. 5.Sreekrishna CollegeGuruvayoorIndia

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