Materials for Holographic Optical Elements.
Final technical rept. 1 Nov 72-30 Jun 73,
RADIATION MELBOURNE FLA ELECTRO-OPTICS OPERATIONS
Pagination or Media Count:
The objective of this program was the development of an infrared sensitive recording material suitable for holographic optical elements applications. The major efforts were directed to the IR sensitization of photoplastic materials and the development of an IR sensitive photodegradable material. A theoretical analysis for the spectral sensitization of PVK was developed to further our understanding of the sensitization mechanism and as an aid to estimating the efficiency of particular sensitizers. A number of materials were evaluated in an experimental survey of candidate sensitizers. Several sensitizers were identified that, in complex with polyvinylcarbozole PVK formed photoconductors sensitive to 1.15 micrometer radiation. These sensitizers include chloranil, tetranitrofluorenone, and an Eastman Q-Switch dye. Holograms were recorded at a wavelength of 1.15 micrometer with exposure sensitivities as low as 40 m to the J powersq cm. Suitable sensitizers were also identified for use in photodegradable materials. Modified author abstract