Raman induced phase conjugation spectroscopy
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.
KeywordsRaman induced phase conjugation spectroscopy coherent Raman spectroscopy phase conjugate property
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- Dorsinville R, Delfyett P and Alfano R R 1987 (Weinhein/Bergstr: Verlag Chemie GmbH)Appl. Optics 26 3655Google Scholar
- Fisher R A (ed.) 1983Optical phase conjugation (New York: Academic Press)Google Scholar
- McCallun D S, Hutchinson M H R and Adrain R S 1988Phys. Rev. A38 222Google Scholar
- Pepper D M 1982Opt. Eng. 21 158Google Scholar
- Saha S K and Hellwarth R W 1983Phys. Rev. A27 919Google Scholar
- Schrader B and Meier W 1974Maman/IR atlas of organic compounds (Weinhein/Bergstr: Verlag Chemie GmbH) vols 1 & 2Google Scholar
- Zel’dovich B Ya, Pilipetesky N F and Shkunov V V 1985Principles of phase conjugation (Berlin: Springer Verlag)Google Scholar