title: Single-shot, dual-wavelength digital holography based on polarizing separation.
abstract: We describe what we believe to be a new digital holographic configuration that can be utilized for both single-shot, dual-wavelength, off-axis geometry and imaging polarimetry. To get the feasibility of the single-shot, dual-wavelength, off-axis geometry, a sample with a nominal step height of 1.34 μm is used. Undesirable noises that strongly affect the measurement have been suppressed successfully by using a modified flat fielding method for the dual-wavelength scheme. And also, the experiment is conducted on a nanopattern sample on the basis of a single image acquisition to show the imaging polarimetry capability. The proposed scheme can provide a real-time solution for measuring three-dimensional objects having a high abrupt height difference with moderate accuracy. Furthermore, it can be used as a fast polarization imaging measurement tool.
authors: Division of Mechanical System Engineering, Chonbuk National University, Jeonju 561-756, South Korea.
authors: D G
authors: DG
authors: Abdelsalam
authors: Robert
authors: R
authors: Magnusson
authors: Daesuk
authors: D
authors: Kim