Accession Number:

ADA167085

Title:

Coherent Scattering of Light by Crystals.

Descriptive Note:

Final rept. 1 Feb 84-31 Jan 85,

Corporate Author:

MARYLAND UNIV COLLEGE PARK DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s):

Report Date:

1985-03-30

Pagination or Media Count:

7.0

Abstract:

For the past several years we have been studying coherent scattering of red light from a Helium Neon Laser, by sapphire and lithium fluoride crystals. The theory has been presented in earlier proposals, and reports. This theory has been presented in earlier proposals, and reports. This theory predicts that nearly perfect crystals with nuclei having magnetic moments, will absorb light by a collective spin state change. Thus many nuclei change their spin state in a magnetic field, absorbing a single red photon. Experiments have been carried out at liquid helium temperatures, in which light from a helium neon laser interacts with nuclear spins in a crystal. Collective absorption of photons by the spin system is observed, if the spins are polarized by a magnetic field, and appropriate polarized light employed.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE