Single-exposure two-dimensional superresolution in digital holography using a vertical cavity surface-emitting laser source array

Luis Granero, Zeev Zalevsky, Vicente Micó

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We present a new implementation capable of producing two-dimensional (2D) superresolution (SR) imaging in a single exposure by aperture synthesis in digital lensless Fourier holography when using angular multiplexing provided by a vertical cavity surface-emitting laser source array. The system performs the recording in a single CCD snapshot of a multiplexed hologram coming from the incoherent addition of multiple subholograms, where each contains information about a different 2D spatial frequency band of the object's spectrum. Thus, a set of nonover-lapping bandpass images of the input object can be recovered by Fourier transformation (FT) of the multiplexed hologram. The SR is obtained by coherent addition of the information contained in each bandpass image while generating an enlarged synthetic aperture. Experimental results demonstrate improvement in resolution and image quality.

Original languageEnglish
Pages (from-to)1149-1151
Number of pages3
JournalOptics Letters
Volume36
Issue number7
DOIs
StatePublished - 1 Apr 2011

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