Optical phase-conjugation studies in Acid blue 9 dye-doped gelatin film using low-power He-Ne laser

We report on the observation of optical phase-conjugation (OPC) in Acid blue 9 dye-doped gelatin film using a low-power continuous-wave (He-Ne, 633 nm, 35 mW) laser by the degenerate four-wave mixing (DFWM) method. The intensity of the phase-conjugate signal was measured as a function of time of exp...

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Bibliographic Details
Published in:Journal of modern optics 2006-05, Vol.53 (8), p.1131-1139
Main Authors: Geethakrishnan, T., Palanisamy, P. K.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gas lasers including excimer and metal-vapor lasers
Lasers
Nonlinear optics
Optics
Phase conjugation, optical mixing
photorefractive and kerr effects
Physics
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Summary:We report on the observation of optical phase-conjugation (OPC) in Acid blue 9 dye-doped gelatin film using a low-power continuous-wave (He-Ne, 633 nm, 35 mW) laser by the degenerate four-wave mixing (DFWM) method. The intensity of the phase-conjugate signal was measured as a function of time of exposure. The phase-conjugate signal contributions from induced transmission and reflection gratings were measured. The fringe spacing (Λ) of the transmission and reflection gratings formed in the Acid blue 9 dye film were calculated as 5.12 and 0.32 µm respectively.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340500499740