Accession Number:

ADA291200

Title:

Sensor Protection Portion of the Development of Nonlinear Optical Materials and Processes for Laser Hardening of Sensors.

Descriptive Note:

Final rept. 1 Jan 92-31 Mar 93,

Corporate Author:

OKLAHOMA STATE UNIV STILLWATER CENTER FOR LASER RESEARCH

Personal Author(s):

Report Date:

1994-10-31

Pagination or Media Count:

66.0

Abstract:

Nonlinear optical properties of several lead galliate glasses, CdMnTe and CdMnSe semiconductors, and SBN photorefractive crystals were studied in nanosecond and picosecond time regimes. Optical limiting characteristics of lead galliates were investigated as a function of the material properties, device geometries and incident wavelengths. Broad band clamping was observed under nanosecond illumination. Nonlinear absorption and refraction in semiconductors were studied in the picosecond time regimes. A saturation in the nonlinear refraction at high input intensities were observed which may hinder applicability of these materials as picosecond optical limiters. Picosecond and subpicosecond photorefractive properties of SBN crystals revealed that in addition to the photorefractive behavior, this material exhibited induced absorption by retrapped pump generated carriers. MM

Subject Categories:

  • Optical Detection and Detectors
  • Optics
  • Lasers and Masers
  • Refractory Fibers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE