supported by the National Natural Science Foundation of China(NSFC,Grant No.U1931137);the National Key Basic Research Program of China(2018YFA0404702)。
Dual-reflector antennas are widely used in astronomical observations and satellite communication.Structural deformations of the reflectors for radio telescopes are inevitable in outside working conditions due to exter...
Project partially supported by the National Basic Research Program of China(Grant No2004CB719802);an additional support from the Science and Technology Department of Zhejiang Province,China
Since the complete correction of all five monochromatic Seidel aberrations for a singlet lens with random shape or a two-thin-lens system is unprocurable merely by using the conventional positive-index materials both ...
This work was supported by the National "973" Program of China under Grant No. 2007CB307000 and 2007CB307001.
The approximative formula for the far-field diffraction of a Gaussian beam through a circular aperture is obtained by using the superposition of Gaussian beams instead of the aperture function, and the explicit expres...