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Out-of-plane beam shaping with UV-written tilted Bragg gratings for beam delivery on quantum chips

Out-of-plane beam shaping with UV-written tilted Bragg gratings for beam delivery on quantum chips
Out-of-plane beam shaping with UV-written tilted Bragg gratings for beam delivery on quantum chips
We theoretically and numerically investigate the performance of tilted Bragg gratings in planar waveguides, fabricated by direct UV writing in photosensitive silica, to couple light out of a chip. An analytic expression is derived for the coupling efficiency and validated numerically by finite element simulations. Using the analytic result, we can design gratings to generate output beams in free space of any specific shape and calculate their overall power coupling efficiency. Our simulations indicate that for currently achievable grating index contrasts devices of millimeter length are most suitable for this technology.
1094-4087
44628-44639
Ko, Dong-Woo
aae111cb-4988-4b76-9ab2-e077d36538b3
Ahmed, Qazi
2a627fc7-aca4-4380-85d8-90349bbf9e2b
Field, James
87ce1146-333d-489c-839d-b6f654049abc
Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Ko, Dong-Woo
aae111cb-4988-4b76-9ab2-e077d36538b3
Ahmed, Qazi
2a627fc7-aca4-4380-85d8-90349bbf9e2b
Field, James
87ce1146-333d-489c-839d-b6f654049abc
Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03

Ko, Dong-Woo, Ahmed, Qazi, Field, James, Gates, James C. and Horak, Peter (2022) Out-of-plane beam shaping with UV-written tilted Bragg gratings for beam delivery on quantum chips. Optics Express, 30 (25), 44628-44639. (doi:10.1364/OE.469501).

Record type: Article

Abstract

We theoretically and numerically investigate the performance of tilted Bragg gratings in planar waveguides, fabricated by direct UV writing in photosensitive silica, to couple light out of a chip. An analytic expression is derived for the coupling efficiency and validated numerically by finite element simulations. Using the analytic result, we can design gratings to generate output beams in free space of any specific shape and calculate their overall power coupling efficiency. Our simulations indicate that for currently achievable grating index contrasts devices of millimeter length are most suitable for this technology.

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Out-of-plane beam shaping with UV-written tilted Bragg gratings for beam delivery on quantum chips - Accepted Manuscript
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Accepted/In Press date: 8 August 2022
e-pub ahead of print date: 22 November 2022

Identifiers

Local EPrints ID: 469551
URI: http://eprints.soton.ac.uk/id/eprint/469551
ISSN: 1094-4087
PURE UUID: 5fecd42d-bc94-424e-9f61-51b8c35f5977
ORCID for Dong-Woo Ko: ORCID iD orcid.org/0000-0001-6552-8824
ORCID for Qazi Ahmed: ORCID iD orcid.org/0000-0003-0731-5390
ORCID for James C. Gates: ORCID iD orcid.org/0000-0001-8671-5987
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764

Catalogue record

Date deposited: 20 Sep 2022 16:35
Last modified: 26 Nov 2024 02:59

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Contributors

Author: Dong-Woo Ko ORCID iD
Author: Qazi Ahmed ORCID iD
Author: James Field
Author: James C. Gates ORCID iD
Author: Peter Horak ORCID iD

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