Deterministic stabilization of eight-way 2D diffractive beam combining using pattern recognition | Zendy

Qiang Du | Zendy; Tong Zhou | Zendy; Lawrence Doolittle | Zendy; Gang Huang | Zendy; Derun Li | Zendy; Russell Wilcox | Zendy

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Deterministic stabilization of eight-way 2D diffractive beam combining using pattern recognition

Author(s) -

Qiang Du,

Tong Zhou,

Lawrence Doolittle,

Gang Huang,

Derun Li,

Russell Wilcox

Publication year - 2019

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.44.004554

Subject(s) - optics , beam (structure) , channel (broadcasting) , square (algebra) , phase (matter) , scaling , computer science , ptychography , usable , diffraction , phase retrieval , stability (learning theory) , diffraction efficiency , physics , intensity (physics) , power (physics) , fourier transform , telecommunications , mathematics , geometry , quantum mechanics , machine learning , world wide web

We demonstrate a new method for controlling diffractive, high-power beam combination, sensing phase errors by analyzing the intensity pattern of uncombined side beams at the output. A square array of eight beams is combined with <0.3% stability and 84.6% efficiency. As the channel count is increased, so does the usable information, enabling scaling to large channel counts without significant slowing of control loop response time, an advantage over single-input algorithms.

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