INVESTIGATIONS IN THE FAR-INFRARED WITH A LAMELLAR GRATING INTERFEROMETER

Abstract

The theory and practice of far-infrared, two-beam interferometry is summarized. A description of the instrumentation and performance of a two-beam, double-beam, far-infrared lamellar-grating interferometer is given. Detailed experimental measurements and analyses of the pure rotational spectra of the atmospheric molecules nitric oxide (NO) and water (H2O) are presented. Also discussed in depth are measurements of the optical constants of some important far-infrared window materials and the fabrication and performance of narrow bandpass filters for the far-infrared. Included is a discussion of noise, experimental errors, and problems in the practice of two-beam interferometry. Finally, a summary is given of the computational programs necessary and convenient for reducing the raw interferometric data to their more readily used spectral form.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1967
Accession Number
AD0810227

Entities

People

  • C. M. Randall
  • Jerome M. Dowling
  • R. D. Rawcliffe
  • R. T. Hall

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Absorption
  • Carbon Monoxide
  • Computer Programming
  • Computer Programs
  • Computers
  • Dielectric Gases
  • Distortion
  • Fabrication
  • Geometry
  • Measurement
  • Optics
  • Recording Systems
  • Refraction
  • Refractive Index
  • Spectra
  • Spectroscopy
  • Spin-Orbit Interaction

Fields of Study

  • Physics

Readers

  • Image Processing and Computer Vision.
  • Materials Science and Engineering.
  • Microwave Engineering.