Evaluation of the Spatial and Temporal Characteristics of the Conducting PRIZ
Abstract
The imaging properties of the conducting PRIZ were re-evaluated using crystals which were carefully ground and polished to minimize surface layer damage. Resolution was quantified as a function of the energy density of the write-beam for both incoherent and coherent light sources. Maximum resolution from a standardized bar chart was determined using a model derived from a hybrid of luminance ratios used to evaluate image quality and the Rayleigh criteria for two point resolution. In addition, the spatial-temporal frequency dependence of the conducting PRIZ in the dynamic imaging mode was demonstrated and, quantified for coherent illumination over a range of spatial and temporal frequencies. The write-beam- induced damage threshold for these carefully prepared crystals was determined in terms of energy density. Optical memory of the device was found to last for 20-60 minutes, depending on the specific spatial frequency, at these peak energy densities when a single pulse of write-beam was applied. When multiple pulses of write-beam energy were applied, the frequency of the pulses (temporal frequency) as well as the energy density of the beam and spatial frequency of the object influenced memory decay. Keywords: Bismouth silicon oxide; Spatial light modulators; Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1988
- Accession Number
- ADA202593
Entities
People
- Patrick J. Gardner
Organizations
- Air Force Institute of Technology