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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/102/05/0565-0574

    • Keywords

       

      Raman induced phase conjugation spectroscopy; coherent Raman spectroscopy; phase conjugate property

    • Abstract

       

      Raman induced phase conjugation (RIPC) spectroscopy is a relatively new coherent Raman spectroscopic (CRS) technique using optical phase conjugation (OPC), with which complete Raman spectra of transparent media can be obtained. It is a non-degenerate four-wave mixing technique in which two pulsed laser beams at Ω1 and Ω1 ± Δ where A corresponds to a vibrational frequency of a nonlinear medium mix with a third laser beam at Ω1 to generate a fourth beam Ω1± Δ, which is nearly phase conjugate to one of the beams at Ω1. With this technique one can measure the ratio of the resonant and nonresonant components of the third-order nonlinear susceptibilities of the nonlinear media. We have used this technique to get Raman spectra of well-known organic solvents like benzene etc., using pulsed Nd: YAG -dye laser systems. We have also studied the effect of delaying one of the interacting beams with respect to the others and the phase conjugate property of RIPC signals.

    • Author Affiliations

       

      B Raghavendra Prasad1 R Krishna Mohan1 C K Subramanian1 P S Narayanan1

      1. Department of Physics, Indian Institute of Science, Bangalore - 560012, India
    • Dates

       
  • Journal of Chemical Sciences | News

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