title: Role of recording geometry in the performance of spectral diversity filters with spherical beam volume holograms.
abstract: We present experimental demonstrations of spectral diversity filters with spherical beam volume holograms for multimodal multiplex spectroscopy. Major properties of filters under diffuse-light illumination are discussed. The comparisons of spectral diversity between the transmission geometry holograms and the reflection geometry holograms are also studied. The results show that there is a trade-off between the degree of the spatial coherence of the source and the spectral diversity of the filter. We also conclude that the reflection geometry holograms have better spectral diversity and less sensitivity to the spatial coherence of the source.
authors.affiliation: School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: Chaoray
authors.initials: C
authors.lastname: Hsieh
authors.forename: Omid
authors.initials: O
authors.lastname: Momtahan
authors.forename: Arash
authors.initials: A
authors.lastname: Karbaschi
authors.forename: Ali
authors.initials: A
authors.lastname: Adibi
authors.forename: Michael E
authors.initials: ME
authors.lastname: Sullivan
authors.forename: David J
authors.initials: DJ
authors.lastname: Brady