Polarization recording of dynamic holograms in saturable absorbers

Jose Luis Arce Diego; Felix Fanjul Velez; David Pereda Cubian; Alexei L. Tolstik; Oleg G. Romanov; Omar Ormachea

doi:10.1117/12.588986

23 March 2005 Polarization recording of dynamic holograms in saturable absorbers

Jose Luis Arce Diego, Felix Fanjul Velez, David Pereda Cubian, Alexei L. Tolstik, Oleg G. Romanov, Omar Ormachea

Proceedings Volume 5710, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IV; (2005) https://doi.org/10.1117/12.588986
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

Abstract

The potentialities of diffraction methods for wavefront transformations may be considerably widened due to the use of nonlinear recording of dynamic holograms enabling multiwave mixing in media with the fifth and higher order nonlinearities. There is a great variety of such media including the resonant ones for which the presence of higher order nonlinearities is conditioned by the absorption saturation effect and transitions between different excited states of the molecules. However, in the majority of previous studies of multiwave mixing the resonant medium approximation has been used disregarding the induced anisotropy effect. This work presents a theoretical model and experimental studies of the energy efficiency of multiwave mixing in complex molecular media exhibiting higher order nonlinearities, in two cases: when the nonlinear cavity is introduced in the Fabry-Perot interferometer (IFP), and without it. Owing to the use of different combinations of mutually aligning polarizations for interacting waves, one is enabled to determine the contribution into the interaction efficiency by various dynamic gratings and nonlinearity mechanisms. The role of polarization gratings resultant from spatial modulation of the light field polarization state at the orthogonal polarization of the hologram recording waves has been established. Comparisons between the contributions of the above gratings and “normal” gratings recorded by identically polarized light beams into the process of multiwave mixing have demonstrated that the relation of these contributions is dependent on the intensity of interacting waves, and also it has been found that polarization of the diffracted wave is dependent on the diffraction order.

Citation Download Citation

Jose Luis Arce Diego, Felix Fanjul Velez, David Pereda Cubian, Alexei L. Tolstik, Oleg G. Romanov, and Omar Ormachea "Polarization recording of dynamic holograms in saturable absorbers", Proc. SPIE 5710, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IV, (23 March 2005); https://doi.org/10.1117/12.588986

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