Wave Optics To explain some phenomena, such as interference and diffraction of light, it is necessary to go beyond geometrical optics. Huygens' principle Huygens considered light to be a wave. He envisioned a wave crest advancing by imagining each point along the wave crest to be source point ...
shack-hartmann wavefront sensor;under-sampling;wavefront reconstruction;adaptive optics;weak light 1. Introduction Over the last two decades, exploring the origin and the future of the universe has become a high scientific priority in astronomical and cosmology areas. In 2020, the institute of high...
Versions Notes Abstract To improve the power of reference wavefront generated by reference wavefront source (RWS) based on silicon nitride (SiN) waveguide in point diffraction interferometer (PDI), we design the Y-branch coupler and grating coupler, and then compare the maximum coupling efficiency,...
Versions Notes Abstract A cylindrical waveguide structure with the running refractive index wave has been recently demonstrated as a means for the generation of high-repetition-rate pulse trains. The operation mechanism involves a proper combination of the frequency modulation and modulation instability ...
Versions Notes Abstract This paper investigates the ion-acoustic wave structures in fluid ions for the Benjamin–Bona–Mahony–Peregrine–Burgers (BBMPB) equation. The various types of wave structures are extracted including the three-wave hypothesis, breather wave, lump periodic, mixed-type wave, ...
Versions Notes Abstract This work proposes a new wave-period estimation (L-dB) method based on the power-spectral-density (PSD) estimation of pitch and roll motional time series of a Doppler wind lidar buoy under the assumption of small angles (±22 deg) and slow yaw drifts (1 min), and...
Versions Notes Abstract The projection objective lens holds a pivotal role in lithography, directly influencing imaging system quality and, consequently, the lithography machine’s feature dimensions. Optical inspection methods for this lens require advancements in calibrating systematic error and enhancing al...
Review ReportsVersions Notes Abstract Wavefront analysis is a fast and reliable technique for the alignment and characterization of optics in the visible, but also in the extreme ultraviolet (EUV) and X-ray regions. However, the technique poses a number of challenges when used for optical systems...
Versions Notes Abstract This paper deals with bistatic subsurface probing of a horizontally layered dielectric half-space by means of ultra-wideband electromagnetic waves. In particular, the main objective of this work is to present a new method for the solution of the two-dimensional back-scatteri...
Versions Notes Abstract Large-aperture space telescopes have played an important role in space gravitational wave detection missions. Overcoming the influence of the space environment on interstellar laser distance measurement and realistic high-concentration laser distance measurement is one of the topics th...