Accession Number:

AD0810227

Title:

INVESTIGATIONS IN THE FAR-INFRARED WITH A LAMELLAR GRATING INTERFEROMETER

Descriptive Note:

Rept. for Jan 1965-Jan 1967

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA LABS DIV

Personal Author(s):

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

Report Date:

1967-03-01

Pagination or Media Count:

201.0

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.

Descriptors:

• *INFRARED RADIATION
• COMPUTER PROGRAMS
• MEASUREMENT
• INFRARED SPECTROSCOPY
• PERFORMANCE(ENGINEERING)
• INFRARED EQUIPMENT
• INFRARED WINDOWS
• SCIENTIFIC RESEARCH
• INTERFEROMETERS
• WATER
• GRATINGS(SPECTRA)
• STANDARDS
• NITROGEN OXIDES

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE