Abstract
An original femtosecond laser source associated with a nonlinear optical correlator was used for imaging through scattering media with 1220-nm light. The system, which operates as an ultrafast optical gate by sum-frequency generation in a nonlinear crystal, was able to detect the light reflected from a resolution chart hidden in a turbid medium, at an attenuation of as much as 15 mean free paths. When the object was illuminated with a collimated beam, real-time two-dimensional images were obtained, with a maximum transverse resolution of .
© 2000 Optical Society of America
Full Article | PDF ArticleMore Like This
C. Doulé, T. Lépine, P. Georges, and A. Brun
Opt. Lett. 25(5) 353-355 (2000)
S. K. Gayen, Manuel E. Zevallos, M. Alrubaiee, J. M. Evans, and R. R. Alfano
Appl. Opt. 37(22) 5327-5336 (1998)
A. Robertson, H. Fuchs, U. Ernst, R. Wallenstein, V. Scheuer, and T. Tschudi
J. Opt. Soc. Am. B 17(4) 668-671 (2000)