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Updated: Jul 1, 2026

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
Published on: August 13, 2019
Characterization of the diffraction efficiency of polymer-liquid-crystal-polymer-slices gratings at all incidence
Man Xu1, Luciano De Sio, Roberto Caputo
1Optics Research Group, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, the Netherlands. m.xu@tudelft.nl
Abstract:
Recently, a novel holographic diffraction grating made of polymer slices alternated to homogeneous films of nematic liquid crystal (POLICRYPS) was realized. We study the optical performance of the POLICRYPS gratings by both numerical simulations and experiments. Characterization of the grating at normal and conical reading mount are performed. The diffraction efficiency depends strongly on the angles of incidence. Besides, the characterization of the diffraction efficiency at Bragg angle incidence is studied. A uniform high diffraction efficiency is achieved when the incident wave satisfies the Bragg condition.
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