Results 21 to 30 of about 87,502 (260)
Statistical Model of Digital Coherent Combining Efficiency in Multi-aperture Receivers
Guangtongxin yanjiu, 2022 In order to mitigate the performance fading of Free-Space Optical (FSO) communication system caused by atmospheric turbulence, a multi-aperture receiving scheme based on digital coherent beam combining is used.
Jing-song XIANG, Xin-hao Lü
doaj +3 more sources
IEEE Photonics Journal, 2019 A fraction of a laser beam array, whose unknown piston phase relationships must be set to prescribed values, is launched into a scattering media with random transmission.
Jeremy Saucourt +4 more
doaj +1 more source
Simple beam combination for stellar interferometry
Optics Letters, 2007 3 ...
Ribak, E. N. +3 more
openaire +3 more sources
IEEE Access, 2019 This paper demonstrates a 19 X 1 incoherent space beam combiner tailored for oil well laser perforation, which is used for an incoherent laser beam combining of 19 fiber-transmitted semiconductor lasers around a wavelength of 972 nm.
Yang Bai +5 more
doaj +1 more source
The generation and verification of Bessel-Gaussian beam based on coherent beam combining
Results in Physics, 2020 We propose a method to generate Bessel-Gaussian (BG) beam by Gaussian beam array where beamlets are arranged along a circle. The phase difference between adjacent beamlets is a constant, and the total phase increment is equal to 2πl (l is integer). Based
Tao Yu +4 more
doaj +1 more source
Frontiers in Public Health, 2022 Cancer is one of the major diseases that seriously threaten the human health. Radiotherapy is a common treatment for cancer. It is noninvasive and retains the functions of the organ where the tumor is located.
Liqiu Ma, Liqiu Ma
doaj +1 more source
Enhanced Supermode Stability in Weakly Anti-Guided Dual-Cavity Photonic Crystal VCSEL Arrays
IEEE Photonics JournalWe report on 940 nm dual-cavity photonic crystal vertical-cavity surface-emitting laser (VCSEL) arrays fabricated at a commercial foundry. These arrays leverage an anti-guided design enabled by reduced electrical resistance between optically coupled ...
Dan W. Pflug +7 more
doaj +1 more source
Photonics, 2022 We report a coherent beam combining technique using a specific quasi-reinforcement learning scheme. A neural network learned by this method enables the tailoring and locking of a tiled beam array on any phase map.
Maksym Shpakovych +6 more
doaj +1 more source
Interferometric beam combination with discrete optics [PDF]
Optics Letters, 2010 We explore the capabilities of discrete diffraction in phase retrieval problems and propose an innovative scheme exploiting a two-dimensional array of coupled waveguides to determine the phase and amplitude of the mutual correlation function between any pair of three telescopes of an astrointerferometer.
Stefano, Minardi, Thomas, Pertsch
openaire +2 more sources
Design of a 36-W fiber-coupled green laser diode by Zemax
Results in Physics, 2018 We propose a design of a 36 W fiber-coupled green diode laser based on TO-Can packaged emitters using Zemax. This is achieved by beam collimation, spatial beam combining, polarized beam combining and fiber coupling.
Chuang Zhou +4 more
doaj +1 more source