Results 21 to 30 of about 86,848 (262)
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
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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
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Applied Sciences, 2019 Filter-based spectral beam combining (FSBC) is a promising power-scaling concept for high-power, broad-linewidth fiber lasers, as it relaxes the requirements for linewidth control and also the sizes of the individual beams.
Jun Ma, Fan Chen, Cong Wei, Rihong Zhu
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Revisit of combined parallel‐beam/cone‐beam or fan‐beam/cone‐beam imaging [PDF]
Medical Physics, 2013 Purpose:This aim of this paper is to revisit the parallel‐beam/cone‐beam or fan‐beam/cone‐beam imaging configuration, and to investigate whether this configuration has any advantages.Methods:Twenty years ago, it was suggested to simultaneously use a parallel‐beam (or a fan‐beam) collimator and a cone‐beam collimator to acquire single photon emission ...
openaire +2 more sources
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
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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
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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
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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
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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
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Research on beam quality control technology of 2 μm antimonide semiconductor laser
Frontiers in Physics, 2022 Antimonide semiconductor laser is a new type of laser with unique advantages in the 2 μm band. However, employing FP cavities causes multiple transverse modes to degrade beam quality despite achieving higher power output.
Sensen Li +9 more
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