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Poling-inhibited ridge waveguides in lithium niobate crystals

Poling-inhibited ridge waveguides in lithium niobate crystals
Poling-inhibited ridge waveguides in lithium niobate crystals
Ultraviolet laser irradiation of a lithium niobate +z polar surface enables the production of ridge waveguides. Ultraviolet laser induced inhibition of poling is used to define an inverted domain pattern which transforms into a ridge structure by differential etching in hydrofluoric acid. The laser irradiation step also induces a refractive index change that provides the vertical confinement within the ridge structure. Furthermore, it was observed that poling-inhibition results in a significant enhancement of the refractive index contrast between the bulk crystal and the ultraviolet irradiated tracks.
0003-6951
Sones, C.L.
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Ganguly, P.
f48cd068-1f8c-44dc-bbbc-402c783898ea
Ying, C.Y.J.
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Soergel, E.
f4d5aad1-9f81-4877-bceb-33ceed99d9d7
Eason, R.W.
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Mailis, S.
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Sones, C.L.
9de9d8ee-d394-46a5-80b7-e341c0eed0a8
Ganguly, P.
f48cd068-1f8c-44dc-bbbc-402c783898ea
Ying, C.Y.J.
1cc13d62-ee04-4ca3-b0b8-e60a523dc145
Soergel, E.
f4d5aad1-9f81-4877-bceb-33ceed99d9d7
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Mailis, S.
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4

Sones, C.L., Ganguly, P., Ying, C.Y.J., Soergel, E., Eason, R.W. and Mailis, S. (2010) Poling-inhibited ridge waveguides in lithium niobate crystals. Applied Physics Letters, 97 (15). (doi:10.1063/1.3504698).

Record type: Article

Abstract

Ultraviolet laser irradiation of a lithium niobate +z polar surface enables the production of ridge waveguides. Ultraviolet laser induced inhibition of poling is used to define an inverted domain pattern which transforms into a ridge structure by differential etching in hydrofluoric acid. The laser irradiation step also induces a refractive index change that provides the vertical confinement within the ridge structure. Furthermore, it was observed that poling-inhibition results in a significant enhancement of the refractive index contrast between the bulk crystal and the ultraviolet irradiated tracks.

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Published date: 11 October 2010

Identifiers

Local EPrints ID: 177031
URI: https://eprints.soton.ac.uk/id/eprint/177031
ISSN: 0003-6951
PURE UUID: fb514d87-78f5-403b-9162-5a138a3ec1e4
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204
ORCID for S. Mailis: ORCID iD orcid.org/0000-0001-8100-2670

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Date deposited: 14 Mar 2011 11:40
Last modified: 08 Aug 2019 00:39

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Contributors

Author: C.L. Sones
Author: P. Ganguly
Author: C.Y.J. Ying
Author: E. Soergel
Author: R.W. Eason ORCID iD
Author: S. Mailis ORCID iD

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