Scientific Reports (Apr 2021)

Experimental demonstration of spectral domain computational ghost imaging

  • Piotr Ryczkowski,
  • Caroline G. Amiot,
  • John M. Dudley,
  • Goëry Genty

DOI
https://doi.org/10.1038/s41598-021-87355-z
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 7

Abstract

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Abstract We demonstrate computational spectral-domain ghost imaging by encoding complementary Fourier patterns directly onto the spectrum of a superluminescent laser diode using a programmable spectral filter. Spectral encoding before the object enables uniform spectral illumination across the beam profile, removing the need for light collection optics and yielding increased signal-to-noise ratio. In addition, the use of complementary Fourier patterns allows reduction of deleterious of parasitic light effects. As a proof-of-concept, we measure the wavelength-dependent transmission of a Michelson interferometer and a wavelength-division multiplexer. Our results open new perspectives for remote broadband spectral measurements.