Accession Number:

AD0809087

Title:

INTERFERENTIAL SPECTROMETRY THROUGH AMPLITUDE MODULATION (SPECTROMETRE INTERFERENTIEL A SELECTION PAR L'AMPLITUDE DE MODULATION),

Descriptive Note:

Corporate Author:

INSTITUTE OF MODERN LANGUAGES INC WASHINGTON DC

Personal Author(s):

• Connes, P.

Report Date:

1967-02-01

Pagination or Media Count:

16.0

Abstract:

The paper combines two previous communications of the author and describes a new spectrometric method specifically adapted to the infrared. By replacing the two mirrors of the Michelson interferometer by two gratings having the same incidence and by linear variation as a function of time of the path difference between the two beams, it is possible to modulate, in a complex spectrum, a single element of width equal to the theoretical resolution limit of the grating. The solid angle of the effective beam is much larger than in a standard spectrometer so that the method furnishes a large increase of luminosity. The design and construction of prototype and the first findings with it are discussed. Author

Descriptors:

• *INFRARED SPECTROSCOPY
• INTERFERENCE ANALYZERS
• AMPLITUDE MODULATION
• INTERFEROMETERS
• GRATINGS(SPECTRA)
• PERFORMANCE(ENGINEERING)
• RESOLUTION

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE