Control of laser induced cumulative stress for efficient processing of fused silica
Control of laser induced cumulative stress for efficient processing of fused silica
Laser irradiation of silica glass is shown to trigger redistribution of material resulting in accumulation of stress and refractive index modification, and the rearrangement of the glass network has a significant impact on the quality of laser written optical components. We propose an alternative laser writing approach for achieving the desired refractive index and optical phase profiles through improved material stress control, demonstrated using both Gaussian and Bessel writing beams. The new material processing strategy is successfully adapted for implementing photonic circuits and diffractive elements with greater efficiency due to improved uniformity and symmetry of the induced index modification.
Sun, Qi
66e3c3df-5a60-4927-a47a-c4f6020c2fc0
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
2 March 2020
Sun, Qi
66e3c3df-5a60-4927-a47a-c4f6020c2fc0
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Sun, Qi, Lee, Timothy, Beresna, Martynas and Brambilla, Gilberto
(2020)
Control of laser induced cumulative stress for efficient processing of fused silica.
Scientific Reports, 10 (1), [3819].
(doi:10.1038/s41598-020-60828-3).
Abstract
Laser irradiation of silica glass is shown to trigger redistribution of material resulting in accumulation of stress and refractive index modification, and the rearrangement of the glass network has a significant impact on the quality of laser written optical components. We propose an alternative laser writing approach for achieving the desired refractive index and optical phase profiles through improved material stress control, demonstrated using both Gaussian and Bessel writing beams. The new material processing strategy is successfully adapted for implementing photonic circuits and diffractive elements with greater efficiency due to improved uniformity and symmetry of the induced index modification.
Text
s41598-020-60828-3
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Accepted/In Press date: 14 February 2020
e-pub ahead of print date: 2 March 2020
Published date: 2 March 2020
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Publisher Copyright:
© 2020, The Author(s).
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
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Local EPrints ID: 438436
URI: http://eprints.soton.ac.uk/id/eprint/438436
ISSN: 2045-2322
PURE UUID: a5ec5b07-84c4-4739-91c2-39396000b4bc
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Date deposited: 10 Mar 2020 17:31
Last modified: 17 Mar 2024 02:53
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