Applied Physics A

, Volume 115, Issue 1, pp 291–295 | Cite as

Studies of nonlinear optical properties of PicoGreen dye using Z-scan technique

  • C. Pradeep
  • S. Mathew
  • B. Nithyaja
  • P. Radhakrishnan
  • V. P. N. Nampoori
Article

Abstract

In this paper we study the nonlinear optical properties of PicoGreen dye. The investigations involve the single-beam Z-scan technique and measurements were carried out at different incident intensities. Both open and closed aperture Z-scan techniques were performed at 532 nm and it was found that the dye exhibited a reverse saturable absorption with significant nonlinear absorption coefficient and intensity-dependent negative nonlinear refraction coefficient, indicating self-defocusing phenomena. The third-order nonlinear susceptibility and optical limiting threshold were also measured.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • C. Pradeep
    • 1
  • S. Mathew
    • 1
  • B. Nithyaja
    • 1
  • P. Radhakrishnan
    • 1
  • V. P. N. Nampoori
    • 1
  1. 1.International School of PhotonicsCochin University of Science and TechnologyCochinIndia

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