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Applied Optics

Applied Optics


  • Vol. 31, Iss. 24 — Aug. 20, 1992
  • pp: 4905–4906

Optical phase conjugation in methylene blue films

A. T. Reghunath, C. K. Subramanian, P. S. Narayanan, and M. R. Sajan  »View Author Affiliations

Applied Optics, Vol. 31, Issue 24, pp. 4905-4906 (1992)

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Optical phase conjugation in methylene blue sensitized gelatin film has been obtained with 514.5-nm radiation from an argon-ion laser with power levels as low as 50 mW/cm2 for the pump beam in a degenerate four-wave-mixing configuration. The film with a thickness of 110–120 μm prepared from a solution of a 1.8-mmol concentration of methylene blue sensitized gelatin shows a good phase-conjugate reflectivity of 0.5% for this power level at 514.5 nm, which is well away from its absorption peak at ~ 650 nm.

© 1992 Optical Society of America

Original Manuscript: April 18, 1990
Published: August 20, 1992

A. T. Reghunath, C. K. Subramanian, P. S. Narayanan, and M. R. Sajan, "Optical phase conjugation in methylene blue films," Appl. Opt. 31, 4905-4906 (1992)

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