Numerical Technique for Study of Noise Grating Dynamics in Holographic Photopolymers

Photopolymers for Use as Holographic Media

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Impact of inhibitor diffusion in holographic photopolymers

Holographic photopolymers develop permanent index change via the polymerization and subsequent diffusion of monomer. It is well-known that to achieve high-fidelity recording, the rate of polymerization must be small in comparison to the rate of diffusion, particularly for strong exposures that consume significant fractions of the available monomer. When this condition is violated, polymerizatio...

Holographic recording in acrylamide photopolymers: thickness limitations.

Holographic recording in thick photopolymer layers is important for application in holographic data storage, volume holographic filters, and correlators. Here, we studied the characteristics of acrylamide-based photopolymer layers ranging in thickness from 250 microm to 1 mm. For each thickness, samples with three different values of absorbance were studied. By measuring the diffraction efficie...

3D micro-optic circuits in holographic photopolymers

Three-dimensional direct-write lithography into diffusion-mediated photopolymers developed for holography is shown to create 10 micron single-mode waveguides. We demonstrate low-loss waveguides, 90 degree bends off of encapsulated mirrors and fabrication of waveguides to embedded fibers. ©2007 Optical Society of America OCIS codes: (160.5470) Polymers, (160.2900) Holographic recording materials...