title: Near-infrared holography by two-photon photochemistry.
abstract: The applicability of the technique of two-photon four-level photochemistry for the production of near-IR holograms is critically evaluated. Although the current best system (biacetyl in a polycyanoacrylate matrix) has low recording sensitivity, several applications of the material have been demonstrated. Hologram efficiencies of up to 70% recorded at 752 nm are shown. Recording of extended holographic images and production of holographic optical elements are demonstrated. Finally, we have recorded holograms directly with GaAlAs diode lasers.
authors.forename: V
authors.initials: V
authors.lastname: Gerbig
authors.forename: R K
authors.initials: RK
authors.lastname: Grygier
authors.forename: D M
authors.initials: DM
authors.lastname: Burland
authors.forename: G
authors.initials: G
authors.lastname: Sincerbox