Researchers from the University of Science and Technology of China (USTC) have unveiled a planar optical device that ...

Abstract: For three-dimensional (3D) imaging based on fringe projection profilometry (FPP), maximum fringe frequency selection and fringe frequencies allocation have a significant impact on the ...

Abstract: Slanted photopolymer-based diffraction gratings can undergo instant and quantifiable analyte-induced changes in both grating diffraction efficiency and peak reconstruction wavelength. This ...

A symmetric grating is proposed to obtain higher output power in spectral beam combination by increasing the number of lasers and spectral utilization. The grating allows laser beams to be incident ...

By controlling the energy of the Bessel beam, they precisely controlled the gap of the nano-grating ... the zero-level diffraction signal intensity was received with a power meter, and the attenuator ...