A method of optical frequency shifting for heterodyne interferometry based on counterrotating wave plates is described. It is possible with this technique to obtain a higher-frequency shift with fewer components.
© 1984 Optical Society of America
Original Manuscript: March 1, 1984
Manuscript Accepted: April 9, 1984
Published: August 1, 1984
M. P. Kothiyal and C. Delisle, "Optical frequency shifter for heterodyne interferometry using counterrotating wave plates," Opt. Lett. 9, 319-321 (1984)