Open Access81-beam coherent combination using a programmable array generator
Author(s) -
Qiang Du,
Dan Wang,
Tong Zhou,
Derun Li,
Russell Wilcox
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.416499
Subject(s) - optics , spatial light modulator , beam (structure) , testbed , computer science , phase (matter) , phase modulation , generator (circuit theory) , channel (broadcasting) , phase control , free space optical communication , diffraction , physics , optical communication , telecommunications , phase noise , power (physics) , computer network , quantum mechanics
We have generated 81 independently controllable beams using a spatial light modulator and combined them on a diffractive combiner, to characterize the combiner and develop a fast phase error detection scheme. A key parameter of the diffractive combiner is measured in a new way, enabling an efficient combination when programming calibrated phases of each beam. This testbed provides a platform for development of advanced feedback phase control of high channel-count beam combination.