Diffraction calculations are widely used in applications that require numerical simulation of
optical wave propagation. Different numerical diffraction calculation methods have their own …

As an important three-dimensional (3D) display technology, computer-generated holograms
(CGHs) have been facing challenges of computational efficiency and realism. The polygon …

The band-extended angular spectrum method (ASM) is proposed in this Letter for both near-
and far-field diffraction calculation with high accuracy. Due to the aliasing problem of the …

Computing wave propagation is of the utmost importance in computational optics, especially
three-dimensional optical imaging and computer-generated hologram. The angular …

As convolution-based diffraction calculation methods, Rayleigh–Sommerfeld convolution
and the angular spectrum method (ASM) usually require zero padding to avoid circular …

We deal with the problem of characterizing a source or scatterer from electromagnetic
radiated or scattered field measurements. The problem refers to the amplitude and phase …

Fast Fourier transform (FFT) is the most commonly used mathematical method in numerical
calculation, and the FFT-based angular spectrum method (ASM) is also used widely in …

The Fourier transform between the time and frequency signals of light enables highly
efficient band usage in optical communications. Analogously, the Fourier transform between …

A controllable energy method, which considers the undersampling issue of the transfer
function and valid spectral energy of a source signal, is proposed to implement angular …

For this research, we have developed key technologies for a 1.5 µm pixel pitch spatial light
modulator (SLM) using Ge_2Sb_2Te_5 (GST) phase change material. To uniformly …