Accession Number:

ADA263009

Title:

Measurement of a Michelson Interferometer Mirror Velocity With a Time Interval Analyzer

Descriptive Note:

Final rept. Feb-Jun 1992

Corporate Author:

CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD

Report Date:

1992-07-01

Pagination or Media Count:

50.0

Abstract:

This report documents the design, construction, and implementation of a time interval analyzer TIA. The TIA is a precision counter that measures the dynamic variation in the time intervals i.e., frequency of a signal. The helium-neon HeNe laser signal from the servo mirror control circuitry of the interferometer provides a nearly constant frequency source. The HeNe signal frequency is directly proportional to the interferometer mirror velocity. A constant velocity is crucial for the proper operation of a Michelson interferometer, which is used in a Fourier transform spectrometer. The TIA provides a critical evaluation of velocity variations in a single interferometer mirror scan via analysis of the HeNe laser signal. Time interval counter, Time interval analyzer, Fourier transform spectroscopy.

Subject Categories:

  • Lasers and Masers
  • Test Facilities, Equipment and Methods
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE