A new approach to detecting relative motion is proposed based on measuring the beat frequency. A formula is derived for the beat frequency as a function of the speed of translation. A principal sketch of an experimental setup implementing the new idea is proposed, and the effects of possible small differences in the frequencies and phases of the sources are discussed.
© 2009 Optical Society of America
Original Manuscript: May 12, 2009
Manuscript Accepted: August 27, 2009
Published: October 9, 2009
C. I. Christov, "Beat wave interferometry for measuring relative motion," J. Opt. Soc. Am. A 26, 2292-2294 (2009)