TY - JOUR
T1 - Holographic recording in acrylamide photopolymers
T2 - Thickness limitations
AU - Mahmud, Mohammad Sultan
AU - Naydenova, Izabela
AU - Pandey, Nitesh
AU - Babeva, Tzwetanka
AU - Jallapuram, Raghavendra
AU - Martin, Suzanne
AU - Toal, Vincent
PY - 2009/5/10
Y1 - 2009/5/10
N2 - 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 ,umto 1 mm. For each thickness, samples with three different values of absorbance were studied. By measuring the diffraction efficiency growth of ho- lographically recorded gratings and studying the diffraction patterns obtained, the influence ofscattering on the diffraction efficiency of thick volume holographic gratings was analyzed. It was found that, above a particular thickness and absorbance, the diffraction efficiency significantly decreased because of increased holographic scattering. From the diffraction efficiency dependence on absorbance and thickness it is possible to choose photopolymer layer properties that are suitable for a particular holographic application. This study was carried out to determine the highest layer thickness that could be used for phase code multiplexed holographic data storage utilizing thick photopolymer layers as a recording medium. Based on our studies to date we believe that the layer to be used for phase coded reference beam recording with 0.1 absorbance at 532 nm can have a thickness up to 450 μm. The potential use of thicker layers characterized by low scattering losses is part of our continuing research.
AB - 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 ,umto 1 mm. For each thickness, samples with three different values of absorbance were studied. By measuring the diffraction efficiency growth of ho- lographically recorded gratings and studying the diffraction patterns obtained, the influence ofscattering on the diffraction efficiency of thick volume holographic gratings was analyzed. It was found that, above a particular thickness and absorbance, the diffraction efficiency significantly decreased because of increased holographic scattering. From the diffraction efficiency dependence on absorbance and thickness it is possible to choose photopolymer layer properties that are suitable for a particular holographic application. This study was carried out to determine the highest layer thickness that could be used for phase code multiplexed holographic data storage utilizing thick photopolymer layers as a recording medium. Based on our studies to date we believe that the layer to be used for phase coded reference beam recording with 0.1 absorbance at 532 nm can have a thickness up to 450 μm. The potential use of thicker layers characterized by low scattering losses is part of our continuing research.
UR - http://www.scopus.com/inward/record.url?scp=67649248908&partnerID=8YFLogxK
U2 - 10.1364/AO.48.002642
DO - 10.1364/AO.48.002642
M3 - Article
AN - SCOPUS:67649248908
SN - 1559-128X
VL - 48
SP - 2642
EP - 2648
JO - Applied Optics
JF - Applied Optics
IS - 14
ER -