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Optica Publishing Group
  • Journal of Display Technology
  • Vol. 11,
  • Issue 10,
  • pp. 807-813
  • (2015)

Single-Shot Multiwavelength Digital Holography Using Angular Multiplexing and Spatial Bandwidth Enhancement for Extending the Field of View

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Abstract

Single-shot multiwavelength digital holography using angular multiplexing and spatial bandwidth enhancement is proposed to extend the field of view without the superimposition of undesired images. Angular multiplexing is used to record multiple wavelength information with a single-shot exposure of a monochromatic image sensor. Enlargement of the field of view without the superimposition of undesired images is achieved by designing both the object-wave spectra and angle conditions to obtain wide spatial bandwidths in the respective wavelengths with a high signal-to-noise ratio. Theoretical analyses clarified that the field of view is 1.33 times extended in square by the proposed technique in the case of dual wavelengths. Single-shot, multiple wavelengths, and 3D image recording with both the extended field of view and no superimposition of the zeroth-order diffraction wave is experimentally demonstrated while the zeroth-order wave remains, and the color-synthesized image is degraded in the conventional technique. Experimental results agree well to the theoretical analysis.

© 2015 IEEE

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