A simple upconversion scheme utilizing 40-fs pulses is shown to permit high-contrast imaging of objects obscured by a highly scattering medium when no ballistic component is evident in the scattered light and imaging is performed with any portion of the scattered light pulse. We present a time-gated, inherently low-pass spatially filtered imaging method that minimizes signal-averaging requirements and greatly facilitates imaging under severe scattering (turbid) conditions.
© 2001 Optical Society of America
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(290.7050) Scattering : Turbid media
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
Amos Kuditcher, Brian G. Hoover, Markus P. Hehlen, Emmett N. Leith, Stephen C. Rand, and Marian P. Shih, "Ultrafast, Cross-Correlated Harmonic Imaging Through Scattering Media," Appl. Opt. 40, 45-51 (2001)