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Reconfigurable structured light generation in a multicore fibre amplifier

Reconfigurable structured light generation in a multicore fibre amplifier
Reconfigurable structured light generation in a multicore fibre amplifier
Structured light, having spatially varying phase or polarization distributions, has given rise to many novel applications in fields ranging from optical communication to laser-based material processing. The effective and flexible generation of such beams from a compact laser source with practical output powers is of particular interest but remains a great challenge to date. Here we describe an approach capable of addressing these issues by exploiting the coherent combination of multiple tailored Gaussian beams from a multicore fibre (MCF) amplifier. We report a proof-of-concept complex beam shaping experiment, using a cladding-pumped 7-core MCF amplifier as an integrated parallel amplifier array and a spatial light modulator to actively control the amplitude, polarization and phase of the signal light input to each fibre core. We first generate a coherently combined Gaussian laser beam before extending the work to create more exotic structured light beams, including higher-order fibre spatial modes, cylindrical vector beams and helical phase front optical vortex beams. Such coherently combined MCF amplifiers/lasers provide a promising way to generate flexible high power structured laser beams at source.
Adaptive optics, Coherent beam combining, Fibre amplifiers, Structured light, fiber optics and optical communications: fiber optics amplifiers and oscillators
2041-1723
Lin, Di
d858c2c7-6eab-49d8-87e7-6b71d9bad013
Carpenter, Joel
78628132-c944-4247-8b1b-ba29cc82d855
Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Jain, Saurabh
bf4af598-26bf-47f4-a0a4-800095a23eb5
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Feng, Yujun
25a28374-33d9-478f-9bd2-98f0d93231af
Zervas, Michael N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Lin, Di
d858c2c7-6eab-49d8-87e7-6b71d9bad013
Carpenter, Joel
78628132-c944-4247-8b1b-ba29cc82d855
Feng, Yutong
8257a816-5e4a-47bc-8aa2-e364c4d6e21e
Jain, Saurabh
bf4af598-26bf-47f4-a0a4-800095a23eb5
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Feng, Yujun
25a28374-33d9-478f-9bd2-98f0d93231af
Zervas, Michael N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Lin, Di, Carpenter, Joel, Feng, Yutong, Jain, Saurabh, Jung, Yongmin, Feng, Yujun, Zervas, Michael N. and Richardson, David J. (2020) Reconfigurable structured light generation in a multicore fibre amplifier. Nature Communications, 11 (1), [3986]. (doi:10.1038/s41467-020-17809-x).

Record type: Article

Abstract

Structured light, having spatially varying phase or polarization distributions, has given rise to many novel applications in fields ranging from optical communication to laser-based material processing. The effective and flexible generation of such beams from a compact laser source with practical output powers is of particular interest but remains a great challenge to date. Here we describe an approach capable of addressing these issues by exploiting the coherent combination of multiple tailored Gaussian beams from a multicore fibre (MCF) amplifier. We report a proof-of-concept complex beam shaping experiment, using a cladding-pumped 7-core MCF amplifier as an integrated parallel amplifier array and a spatial light modulator to actively control the amplitude, polarization and phase of the signal light input to each fibre core. We first generate a coherently combined Gaussian laser beam before extending the work to create more exotic structured light beams, including higher-order fibre spatial modes, cylindrical vector beams and helical phase front optical vortex beams. Such coherently combined MCF amplifiers/lasers provide a promising way to generate flexible high power structured laser beams at source.

Full text not available from this repository.

More information

Accepted/In Press date: 16 July 2020
Published date: 10 August 2020
Keywords: Adaptive optics, Coherent beam combining, Fibre amplifiers, Structured light, fiber optics and optical communications: fiber optics amplifiers and oscillators

Identifiers

Local EPrints ID: 443378
URI: http://eprints.soton.ac.uk/id/eprint/443378
ISSN: 2041-1723
PURE UUID: 9bad29e1-5349-4a6c-82a2-e99cb98f7c33
ORCID for Di Lin: ORCID iD orcid.org/0000-0001-5025-9051
ORCID for Yutong Feng: ORCID iD orcid.org/0000-0002-6839-2106
ORCID for Yujun Feng: ORCID iD orcid.org/0000-0001-7839-065X
ORCID for Michael N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 24 Aug 2020 16:30
Last modified: 08 Oct 2020 16:31

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