Accession Number:

ADA202593

Title:

Evaluation of the Spatial and Temporal Characteristics of the Conducting PRIZ

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1988-12-01

Pagination or Media Count:

61.0

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.

Subject Categories:

  • Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE