title: Comparison of transmission and the 90-degree holographic recording geometry.
abstract: We compare the system performances of two holographic recording geometries using iron-doped lithium niobate: the 90-degree and transmission geometry. We find that transmission geometry is better because the attainable dynamic range (M/#) is much higher. The only drawback of transmission geometry is the buildup of fanning, particularly during readout. Material solutions that reduce fanning such as doubly-doped photerefractive crystals make transmission geometry the clear winner.
authors.affiliation: Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: Yunping
authors.initials: Y
authors.lastname: Yang
authors.forename: All
authors.initials: A
authors.lastname: Adibi
authors.forename: Demetri
authors.initials: D
authors.lastname: Psaltis