Accession Number:

ADP006696

Title:

Characterization of a New Photorefractive Material:K sub 1-y, L sub y, T sub 1-x, N sub x,

Descriptive Note:

Corporate Author:

NANKAI UNIV TIANJIN (CHINA) DEPT OF PHYSICS

Report Date:

1992-05-22

Pagination or Media Count:

4.0

Abstract:

We have demonstrated the growth of a new photorefractive material, KLTN, and have characterized its photorefractive properties. The crystal was of good quality with a phase transition at 178 dot K. It displayed a strong quadratic photorefractive effect with a sensitivity of 0.0000724. The maximum diffraction efficiency observed was 75 with a corresponding coupling constant of Gamma 1.75cm. The writing times were given by tau sub write 6 sec-sq.cmW, and there was a strong readwrite time asymmetry. The photorefractive process was shown to be voltage controllable. Based on this work, KLTNs seem to be highly promising materials for volume hologram storage applications.

Subject Categories:

  • Optics
  • Acoustooptic and Optoacoustic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE