Impact Statement:The bandwidth of the optical diffraction calculations is important for the accuracy of the optical diffraction simulations. Most previous works only show the effects of c...Show More
Abstract:
The Fourier transform between the time and frequency signals of light enables highly efficient band usage in optical communications. Analogously, the Fourier transform be...Show MoreMetadata
Impact Statement:
The bandwidth of the optical diffraction calculations is important for the accuracy of the optical diffraction simulations. Most previous works only show the effects of controlling the calculated bandwidth on the calculations of optical diffraction from a known image or aperture. In this work, we show the effects of controlling the calculated bandwidth on the retrieve of input optical field from a desired image.
Abstract:
The Fourier transform between the time and frequency signals of light enables highly efficient band usage in optical communications. Analogously, the Fourier transform between the wavefield and wavevector distributions in the optical spatial diffraction is useful to understand the bandwidth considered in the diffraction simulations. In this work, we thoroughly investigate the numerical techniques for controlling the bandwidth in the design of computer-generated holography. The experiments reveal the effects of bandwidth control on both accuracy improvement of diffraction equations and suppression of higher hologram orders. A general formula for controlling the bandwidth directly using the spatial-frequency components is concluded.
Published in: IEEE Photonics Journal ( Volume: 15, Issue: 6, December 2023)