Angular multiplexing in pulsed digital holography for aperture synthesis

作者：Caojin Yuan, Hongchen Zhai, Haitao Liu · 发表于：Optics Letters · 年份：2008 · DOI：10.1364/ol.33.002356 · 被引用次数：87 · 研究领域：Digital Holography and Microscopy、Advanced Optical Imaging Technologies、Optical Coherence Tomography Applications

A new aperture-synthesis approach in a pulsed digital holography system for obtaining superresolution is proposed and experimentally demonstrated in which, with only a single laser pulse divided into two trains of subpulses, angular multiplexing can be applied to both the reference beam for different carrier frequency and the object beam for off-axis and on-axis illuminations. Furthermore, in the recording plane, multiple subholograms covering different spatial frequency ranges diffracted from the object can be recorded in a single frame of a CCD. Our analysis and results show that the resolution of the reconstructed image synthesized upon the reconstructed complex amplitudes of the subholograms can be improved effectively.