Coherent beam combination of four holmium amplifiers with phase control via a direct digital synthesizer chip | Zendy

Michael R. Oermann | Zendy; Neil Carmody | Zendy; Alexander Hemming | Zendy; Simon Rees | Zendy; Nikita Simakov | Zendy; Robert Swain | Zendy; Keiron Boyd | Zendy; Alan Davidson | Zendy; Leonardo Corena | Zendy; Дмитрий Степанов | Zendy; John Haub | Zendy

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Coherent beam combination of four holmium amplifiers with phase control via a direct digital synthesizer chip

Author(s) -

Michael R. Oermann,

Neil Carmody,

Alexander Hemming,

Simon Rees,

Nikita Simakov,

Robert Swain,

Keiron Boyd,

Alan Davidson,

Leonardo Corena,

Дмитрий Степанов,

John Haub

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.006715

Subject(s) - optics , amplifier , holmium , phase (matter) , beam (structure) , phase locked loop , chip , phase modulation , direct digital synthesizer , materials science , physics , phase noise , computer science , optoelectronics , cmos , laser , telecommunications , frequency synthesizer , quantum mechanics

We present the coherent beam combination of four 2100 nm holmium amplifiers with their phase controlled through acousto-optic modulators driven by the RF output of direct digital synthesizer chips. Phase alignment was achieved through the use of a field programmable gate array based stochastic parallel gradient descent algorithm.

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