title: The transport of intensity equation for optical path length recovery using partially coherent illumination.
abstract: We investigate the measurement of a thin sample's optical thickness using the transport of intensity equation (TIE) and demonstrate a version of the TIE, valid for partially coherent illumination, that allows the measurement of a sample's optical path length by the removal of illumination effects.
authors.affiliation: Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. jpetrucc@mit.edu
authors.forename: Jonathan C
authors.initials: JC
authors.lastname: Petruccelli
authors.forename: Lei
authors.initials: L
authors.lastname: Tian
authors.forename: George
authors.initials: G
authors.lastname: Barbastathis
mesh_terms: D003198:Computer Simulation; D008027:Light; D008029:Lighting / Q000379:methods*; D008962:Models, Theoretical; D009391:Nephelometry and Turbidimetry / Q000379:methods*; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation