Increase of Mutual coherence of Light Beams in Two-wave Interaction in Photo -refractive Crystals
Two-wave mixing allows one to change effectively intensities, phases, space profiles, polarizations and time evolution of interacting beams. We will show, that two-wave mixing of partially coherent beams may be used to increase degree of coherence of these beams. The physics of the effect under disc...
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| creator | Bogodaev, N. V Ivleva, L. I Korshunov, A. S Polozkov, N. M Shkunov, V. V |
| description | Two-wave mixing allows one to change effectively intensities, phases, space profiles, polarizations and time evolution of interacting beams. We will show, that two-wave mixing of partially coherent beams may be used to increase degree of coherence of these beams. The physics of the effect under discussion is as follows: two partially coherent beams write a refraction index grating in a nonlinear medium whose position and profile are practically stationary. Scattering of strong beam on this grating in the direction of the weak one means that this weak beam acquires an addition, that is coherent with the strong beam, thereby increasing degree of coherence of the beams. Similar effects were discussed in connection with scattering of different frequency components at the common running grating and with interaction of different polarization components.
This article is from 'Organization of the Optical Society of America Photonic Science Topical Meeting Series. Volume 14. Photorefractive Materials, Effects, and Devices Held in Beverly, Massachusetts on 29-31 July 1991,' AD-A253 001, p105-107. |
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This article is from 'Organization of the Optical Society of America Photonic Science Topical Meeting Series. Volume 14. Photorefractive Materials, Effects, and Devices Held in Beverly, Massachusetts on 29-31 July 1991,' AD-A253 001, p105-107.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | COHERENCE COHERENT OPTICAL RADIATION Component Reports CRYSTALS FREQUENCY GRATINGS(SPECTRA) INTERACTIONS MIXING Optics Photorefractive crystals Photorefractive materials POLARIZATION REFRACTION REFRACTIVE INDEX SCATTERING SYMPOSIA Two wave mixing |
| title | Increase of Mutual coherence of Light Beams in Two-wave Interaction in Photo -refractive Crystals |
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