We demonstrate controlled wavelength-dependent light focusing through turbid media using wavefront shaping. Due to the dispersion caused by multiple light scattering, light propagation through turbid media can be independently controlled between different wavelengths. Foci with various wavelengths can be generated by applying different optimized wavefronts to a highly scattering layer. Given the linearity of the transmission matrix, multiple foci with different wavelengths can also be simultaneously constructed.
© 2012 Optical Society of America
Original Manuscript: April 23, 2012
Revised Manuscript: June 12, 2012
Manuscript Accepted: June 13, 2012
Published: July 30, 2012
Vol. 7, Iss. 10 Virtual Journal for Biomedical Optics
Jung-Hoon Park, ChungHyun Park, Hyunseung Yu, Yong-Hoon Cho, and YongKeun Park, "Active spectral filtering through turbid media," Opt. Lett. 37, 3261-3263 (2012)