Abstract
Optical Phase-Conjugation (OPC) has been observed in Methyl Green (MG) dye sensitized gelatin films in Degenerate Four-Wave Mixing (DFWM) configuration at 633 nm radiation from a He-Ne laser of total power 35 mW. The mechanism of Phase-Conjugate (PC) wave generation associated with this dye-doped system was discussed. The dependence of the PC wave generation on the incident angle between the forward-pump and the probe beams and time of evolution were also studied. A maximum phase-conjugate beam reflectivity of about 0.13% has been observed in this dye-doped gelatin films.
Highlights
Over the last three decades, Optical PhaseConjugation (OPC) has been one of the major research subjects in the field of Nonlinear Optics (NLO) and quantum electronics
In Methyl Green (MG) dye sensitized gelatin film, the PC waves originate from two different processes
The fringe period (Λ) can be determined by the well-known formula Λ = λ / 2sin (θ / 2), where λ is the laser wavelength, and ±θ is the forward-pump and probe beam incident angles with respect to the normal to the nonlinear medium
Summary
Over the last three decades, Optical PhaseConjugation (OPC) has been one of the major research subjects in the field of Nonlinear Optics (NLO) and quantum electronics. Optical phase-conjugation defines usually a special relationship between two coherent optical beams propagating in opposite directions with reversed wavefront and identical transverse amplitude polymers have been used as holographic recording media and permanent optical memories[15]. DFWM technique was used to generate the phase-conjugate waves of the continuouswave He-Ne laser radiation of 35mW at 633nm. I.42590) -doped gelatin film was used as the Nonlinear Medium (NM) in the DFWM geometry. The unique feature of a pair of PhaseConjugate (PC) beams is that the aberration influence
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