Thermal lens spectrum of organic dyes using optical parametric oscillator

Achamma Kurian, K. P. Unnikrishnan, D. Sajan George, Pramod Gopinath, V. P.N. Nampoori, C. P.G. Vallabhan

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The wavelength dependence of thermal lens signal from organic dyes are studied using dual beam thermal lens technique. It is found that the profile of thermal lens spectrum widely differ from the conventional absorption spectrum in the case of rhodamine B unlike in the case of crystal violet. This is explained on the basis of varying contribution of nonradiative relaxations from the excited vibronic levels.

Original languageEnglish
Pages (from-to)487-491
Number of pages5
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Issue number3
Publication statusPublished - 01-02-2003

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy


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