Accession Number : ADP008237

Title :   New Developments in Time-and-Space-Domain Holography and Shaping of Light Pulses by Spectral Hole-Burning Filters,

Corporate Author : SPARTA INC LEXINGTON MA

Personal Author(s) : Kaarli, Rein ; Saari, Peeter ; Sonajalg, Heiki

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Photochemically instable dye molecules in low-temperature polymers are distributed not only spatially in the medium but also spectrally along the axis of resonant optical transition frequencies and orientationally with reference to the polarization of the transition. Consequently, such composite organic materials--spectral hole burning media--can be considered as novel optical materials possessing not only three-dimensional photosensitivity but also sensitivity to the wavelength and polarization of the incident light. The distribution function of the resonance frequencies of dye molecules determines the dielectric permittivity of the material and hence the amplitude and phase transmittance of the sample after exposure to light non-monochromatic polarized light gives rise to a four-dimensional anisotropic hole, or grating pattern, in the distribution function.

Descriptors :   *HOLOGRAPHY, *OPTICAL STORAGE, *MOLECULAR SPECTROSCOPY, COMPOSITE MATERIALS, POLYMERS, RESONANT FREQUENCY, LIGHT MODULATORS, FOUR DIMENSIONAL, TIME, OPTICAL FILTERS, ECHOES.

Subject Categories : Holography
      Computer Hardware
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE