Model for two-beam coupling during the formation of holographic gratings with a nematic film-polymer-slice sequence structure

Autor:	Alessandro Veltri, A. V. Sukhov, Roberto Caputo, Luciano De Sio, Cesare Umeton
Rok vydání:	2005
Předmět:	Materials science Physics and Astronomy (miscellaneous) business.industry Holography Physics::Optics Grating law.invention Optics Liquid crystal law UV curing Physics::Accelerator Physics Wafer business Diffraction grating Beam (structure) Curing (chemistry)
Zdroj:	Applied Physics Letters. 87:141108
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.2048821
Popis:	We present a model accounting for the main features of the wave coupling process that takes place during the UV curing of diffraction gratings made of liquid crystal films separated by slices of polymeric material. The effect depends on the phase shift between the curing interference pattern and the grating being cured. For a unit ratio of the impinging beam intensities, the model confirms the absence of energy transfer, as experimentally observed. When the ratio is not at its unit value, the beam coupling tends to equalize the intensities of the two beams as they propagate inside the sample.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41adf1cf495fa3901a8ec90b9e4c666d https://doi.org/10.1063/1.2048821 Zobrazit plný text záznamu