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Opt Lett. 2008 Oct 15;33(20):2356-8.

Angular multiplexing in pulsed digital holography for aperture synthesis.

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  • 1Institute of Modern Optics, Key Laboratory of Optoelectronic Information Science and Technology, Ministry of Education China, Nankai University, Tianjin, China.


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.

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