Fourier holograms in Norland 65®

In this work it is demonstrated that they can search holograms of type Fourier in real time, utilizing photosensitive material of the polymeric Norland Optical Adhesive 65® (NOA 65®) which, it is mixed with the violet crystal dye (CV); For the record of holograms we use He-Ne laser, of 5 mW of power, in λ= 598 nm spectral line, in the reconstruction we obtains of diffraction efficiency of the 0,216 % in the order one, which almost does not present noise. These holograms are of phase with modulation for index refraction

Theoretical model of the diffraction efficiency of Norland Optical Adhesive No. 65 and crystal violet as temperature function

The diffraction efficiency behavior of the holographic gratings recorded in photopolymers is due to several parameters such as the monomer concentration, the dye quantity, etc. It has been reported that the absorption in photopolymers depends of the beam intensity employed to record the holographic gratings, polymerization velocity, humidity, temperature, etc. In this work we present a theoretical model of the diffraction efficiency behavior of holographic gratings recorded in Norland Optical Adhesive No. 65 mixed with crystal violet dye as function of the temperature and the power of the recorder beam. The model is compared with some experimental results