Highly efficient coherent beam combining of tiled aperture arrays using out-of-phase pattern
Andrianov A, Kalinin N, Anashkina E, Leuchs G (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 45
Pages Range: 4774-4777
Journal Issue: 17
DOI: 10.1364/OL.391259
Abstract
We propose a simple, highly scalable, and very efficient scheme for coherent combining of tiled aperture arrays. The scheme relies on changing the beam phasing paradigm from the commonly used in-phase pattern to the out-of-phase pattern (interleaved 0/π phases in the neighboring channels) and using an additional simple combining stage (a beamsplitter). In a proof-of-concept experiment with a one-dimensional fiber array, we achieved 89% of the power in the main combined beam. In numerical modeling, we found optimal conditions leading to 98% efficiency for an unlimited number of channels and arbitrary small initial aperture fill factors. The scheme is highly resistant to the effect of sub-aperture clipping and suitable for combining ultrashort pulses.
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Russian Federation (RU)How to cite
APA:
Andrianov, A., Kalinin, N., Anashkina, E., & Leuchs, G. (2020). Highly efficient coherent beam combining of tiled aperture arrays using out-of-phase pattern. Optics Letters, 45(17), 4774-4777. https://doi.org/10.1364/OL.391259
MLA:
Andrianov, Alexey, et al. "Highly efficient coherent beam combining of tiled aperture arrays using out-of-phase pattern." Optics Letters 45.17 (2020): 4774-4777.
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