title: Linear phase imaging using differential interference contrast microscopy.
abstract: We propose an extension to Nomarski differential interference contrast microscopy that enables isotropic linear phase imaging. The method combines phase shifting, two directions of shear and Fourier-space integration using a modified spiral phase transform. We simulated the method using a phantom object with spatially varying amplitude and phase. Simulated results show good agreement between the final phase image and the object phase, and demonstrate resistance to imaging noise.
authors.affiliation: Physical Optics Laboratory, School of Physics, University of Sydney, NSW 2006, Australia. mra@cisra.canon.com.au
authors.forename: M R
authors.initials: MR
authors.lastname: Arnison
authors.forename: K G
authors.initials: KG
authors.lastname: Larkin
authors.forename: C J R
authors.initials: CJ
authors.lastname: Sheppard
authors.forename: N I
authors.initials: NI
authors.lastname: Smith
authors.forename: C J
authors.initials: CJ
authors.lastname: Cogswell
mesh_terms: D005583:Fourier Analysis; D007091:Image Processing, Computer-Assisted; D008858:Microscopy, Phase-Contrast / Q000379:methods*; D008962:Models, Theoretical