Accession Number : AD0637717

Title :   THE SAGNAC EFFECT.

Descriptive Note : Physical sciences research papers.

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Post,E. J.

Report Date : MAY 1966

Pagination or Media Count : 51

Abstract : A revived interest in the Sagnac effect, because of its navigational potentialities has recently resulted from the development of the self-oscillating laser version of the original Sagnac interferometer. Where the Sagnac interferometer or ring laser is an example of an electromagnetic sensor of absolute rotation, it was believed that some historical and theoretical background information might be useful in exploring and further evaluating the possibilities of electromagnetic sensing of absolute rotation. A critical literature study of the many experimental ramifications and the older kinematical theory of the effect is presented. This geometric optical theory is then complemented and compared with more recent work that is based on a physical optical analysis using a complete electromagnetic description of the phenomenon. (Author)

Descriptors :   (*ELECTROMAGNETISM, ROTATION), (*ROTATION, MEASUREMENT), ACCELEROMETERS, INTERFEROMETERS, OPTICAL PHENOMENA, NAVIGATION

Subject Categories : Electricity and Magnetism
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE