@inproceedings{e22fd72e79094d2ea4f8288c460bcfe4,
title = "Recording and self-enhancement of dynamic polarization gratings in degenerate four-wave-mixing geometry",
abstract = "Scalar and vectorial degenerate four-wave-mixing (DFWM) in azobenzene molecular K-RJ-4-3 [N,N-bis(5,5,5- tryphenylpentyl)-4-((4-tritylphenyl)diazenyl)aniline] and in chalcogenide a-As2S3 glassy films is experimentally investigated. A coherent self-enhancement (CSE) of holographic gratings (HG) in this geometry was experimentally confirmed, for the first time to our knowledge, thus establishing a new method of HG recording, the DFWM CSE recording. Scalar linear s-s, p-p and circular R-R(right) polarizations and orthogonal linear s-p and circular L(left)-R polarizations were used for HG recording with 2 i1/4m period at 532 nm. In the case of K-RJ-4-3 film L-R polarizations were the most efficient enabling the maximum DFWM efficiency Imax=14.5\% whereas in the case of a-As2S3 film s-s polarizations were the best with Imax=6.0\%. DFWM CSE recording has exhibited a different polarization dependence compared to normal DWFM recording. CSE factor I/I0 (I0 being the initial I) was the highest for K-RJ-4-3 film (6.8) with s-s polarizations compared to 3 for a-As2S3 film with p-p polarizations. Two-wave HG recording was also studied for comparison.",
keywords = "degenerate four-wave mixing, dynamic holography, polarization gratings, self-enhancement of gratings, two-wave mixing",
author = "A. Ozols and A. Belyaev and V. Kokars and P. Augustovs and K. Traskovskis and D. Saharov",
note = "Publisher Copyright: {\textcopyright} 2014 SPIE.; 8th International Conference on Advanced Optical Materials and Devices, AOMD 2014 ; Conference date: 25-08-2014 Through 27-08-2014",
year = "2014",
doi = "10.1117/12.2084046",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Janis Spigulis",
booktitle = "Eighth International Conference on Advanced Optical Materials and Devices, AOMD 2014",
address = "United States",
}