Experimental Demonstration of Coherent Combining With Tip/Tilt Control Based on Adaptive Space-to-Fiber Laser Beam Coupling

Autor: Feng Li, Chao Geng, Guan Huang, Yan Yang, Xinyang Li, Qi Qiu

Publikováno v: IEEE Photonics Journal, Vol 9, Iss 2, Pp 1-12 (2017)

A novel approach of tip/tilt control through optimizing laser beam coupling efficiencies from space to polarization-maintaining-fibers with stochastic parallel gradient descent (SPGD) algorithm for coherent beam combining (CBC) applications is propos

Externí odkaz: https://doaj.org/article/a5b40a3396bf49a19f278f7f820a0980

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Automated Optical Flow Based Registration for Adaptive Optics Scanning Laser Ophthalmoscope

Autor: Guohua Shi, Wanyue Li, Yiwei Chen, Feng Gao, Yi He, Lina Xing, Jing Wang

Publikováno v: IEEE Photonics Journal, Vol 12, Iss 2, Pp 1-9 (2020)

This study presents an automated registration method based on optical flow for an adaptive optics scanning laser ophthalmoscope. The method was designed to align and average images to obtain a higher signal-to-noise ratio image. A correlation based o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d0c380718bff138c3551ae7063d712
https://ieeexplore.ieee.org/document/8946720/

Active beam steering and afocal zooming by nematic liquid crystal-infiltrated graded index photonic structures

Autor: Ceren Babayigit, Mirbek Turduev, Hamza Kurt

Publikováno v: Web of Science

This study presents active beam steering and afocal zooming of light by incorporating liquid crystals (LCs) with graded index photonic crystal (GRIN PC). The GRIN PC structures are composed of low refractive index polymer annular rods having graduall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::801be3d54d2fbe7b48f8367107835bd0
http://hdl.handle.net/20.500.11851/2711

Iterative wave-front reconstruction in the Fourier domain

Autor: Carlos Correia, Jean-François Sauvage, Benoit Neichel, Charlotte Z. Bond, Thierry Fusco

Publikováno v: Optics Express
Optics Express, Optical Society of America-OSA Publishing, 2017, 25 (10), ⟨10.1364/OE.25.011452⟩
Optics Express, 2017, 25 (10), p. 11452-11465. ⟨10.1364/OE.25.011452⟩
Optics Express, Optical Society of America-OSA Publishing, 2017, 25 (10), p. 11452-11465. ⟨10.1364/OE.25.011452⟩

International audience; The use of Fourier methods in wave-front reconstruction can significantly reduce the computation time for large telescopes with a high number of degrees of freedom. However, Fourier algorithms for discrete data require a recta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cd7e6201a3f0364db6a78310d371f96
https://hal.archives-ouvertes.fr/hal-01777521/file/1705.04298.pdf