Accession Number:

ADA023623

Title:

Tunable Filters for Background Rejection.

Descriptive Note:

Final rept. Sep 73-Dec 74,

Corporate Author:

ISOMET CORP SPRINGFIELD VA

Report Date:

1976-03-01

Pagination or Media Count:

130.0

Abstract:

The prior work of Dixon, Harris, and Isomet Corp. on the electronically-tunable, collinear-interaction, optical filter was extended with the view toward operation in the infrared spectral range from 0.75 micrometers to 4.0 micrometers. Two filters covering the sub-bands from 0.75 to 1.5 micrometers Band I and 1.5 to 2.8 micrometers Band II were designed and breadboard models were constructed. Good agreement was obtained between the measured and theoretical of these filters. A third filter Band III covering the range from 2.9 micrometers to 4.0 micrometers was designed a breadboard model was partly constructed. A versatile electronic driver capable of supplying acoustic drive power to all three filters in several different operating modes including manual tune and swept-wavelength was also developed. Further extension of the tunable filter spectral range from 4 to 14 micrometers is reported as the result of a research study. Author

Subject Categories:

  • Acoustooptic and Optoacoustic Devices
  • Optical Detection and Detectors
  • Infrared Detection and Detectors
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE