Measurement of the absolute fluorescence quantum yield of rhodamine B solution using a dual-beam thermal lens technique

  • Bindhu C
  • Harilal S
  • Varier G
 et al. 
  • 72


    Mendeley users who have this article in their library.
  • 64


    Citations of this article.


The dual-beam thermal lens technique has been found to be very effective for the measurement of fluorescence quantum yields of dye solutions. The concentration-dependence of the quantum yield of rhodamine B in methanol is studied here using this technique. The observed results are in line with the conclusion that the reduction in the quantum yield in the quenching region is essentially due to the non-radiative relaxation of the absorbed energy. The thermal lens has been found to become abberated above 40 mW of pump laser power. This low value for the upper limit of pump power is due to the fact that the medium is a resonantly absorbing one.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • C. V. Bindhu

  • S. S. Harilal

  • Geetha K. Varier

  • Riju C. Issac

  • V. P.N. Nampoori

  • C. P.G. Vallabhan

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free