High-speed adaptive interferometer for optical coherence-domain reflectometry through turbid media.
Two-wave mixing in a dynamic holographic film acts as the adaptive beam combiner in a short-coherence interferometer that performs optical coherence-domain reflectometry (OCDR) through turbid media. This approach combines the high spatial resolution and sensitivity of coherence-domain reflectometry with photorefractive quantum-well-based adaptive homodyne detection. A depth resolution of 28 microm and penetration through 16 mean free paths in a turbid medium have been obtained in this adaptive OCDR application.
Peng
L
L
Department of Physics, Purdue University, West Lafayette, Indiana 47907-1396, USA. pll@physics.purdue.edu
Yu
P
P
Nolte
D D
DD
Melloch
M R
MR
D007368:Interferometry; D008962:Models, Theoretical; D055095:Optics and Photonics; D012542:Scattering, Radiation