Sensitive measurement of absolute two-photon absorption cross sections

P. Sengupta, J. Balaji, S. Banerjee, R. Philip, G. Ravindra Kumar, S. Maiti

Research output: Contribution to journalArticlepeer-review


The z-scan method was generalized to allow the measurement of very low values of σ2 at moderate intensities. For purpose of demonstration, the generalized method was used to measure the σ2 of Rhodamine 6G dissolved in methanol at 806 nm. The results confirm that the generalized z-scan is a simple method to determine the two-photon cross section of molecules.

Original languageEnglish (US)
Pages (from-to)9201-9205
Number of pages5
JournalJournal of Chemical Physics
Issue number21
StatePublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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