title: Active spectral filtering through turbid media.
abstract: 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.
authors.affiliation: Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.
authors.forename: Jung-Hoon
authors.initials: JH
authors.lastname: Park
authors.forename: ChungHyun
authors.initials: C
authors.lastname: Park
authors.forename: Hyunseung
authors.initials: H
authors.lastname: Yu
authors.forename: Yong-Hoon
authors.initials: YH
authors.lastname: Cho
authors.forename: YongKeun
authors.initials: Y
authors.lastname: Park
mesh_terms: D008027:Light; D055620:Optical Phenomena; D012542:Scattering, Radiation; D013057:Spectrum Analysis / Q000379:methods*