An optical lock-in detector has been proposed and demonstrated. This scheme utilizes the multiplicative and low-pass filtering characteristics of four-wave mixing in Bi12SiO20.
© 1991 Optical Society of America
Original Manuscript: April 1, 1991
Published: September 15, 1991
Jehad Khoury, Vincent Ryan, Charles Woods, and Mark Cronin-Golomb, "Photorefractive optical lock-in detector," Opt. Lett. 16, 1442-1444 (1991)