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Ultraviolet laser induced domain inversion on chromium coated lithium niobate crystals

Ultraviolet laser induced domain inversion on chromium coated lithium niobate crystals
Ultraviolet laser induced domain inversion on chromium coated lithium niobate crystals
Direct UV laser writing on chromium coated lithium niobate (LiNbO3) crystals is found to produce spontaneous domain inversion associated with the exposed UV laser tracks. Experimental evidence suggests that this effect is attributed to local out-diffusion of oxygen, reducing the LiNbO3 crystal surface due to the presence of chromium. The thin chromium film becomes hot and reactive after absorbing the UV laser radiation thus acting as an oxygen getter. This very efficient process enables the inversion of domains at lower intensities as compared to other direct laser based poling methods practically eliminating the deleterious surface damage induced by the direct absorption of the UV laser radiation by the crystal. Furthermore, the versatility of this domain fabrication method, is demonstrated by the production of inverted domain structures on Z-, Y- and 128° YX-cut substrates.
241-254
Boes, Andreas
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Yudistira, Didit
bf2cb00a-3abb-4486-af87-6ff983f38b87
Crasto, Tristan
3a733e96-ef78-4348-8bbe-376f82906fe2
Steigerwald, Hendrik
979c014a-c7d1-4821-a7d5-617ff740448c
Sivan, Vijay
53434367-05e4-4c6b-8d68-0d7982d71746
Limboeck, Thorsten
0b299acb-2eb5-4347-affe-b5a38b86773a
Friend, James
b596b9a4-c7eb-4df7-b308-296d5afdd4d3
Mailis, Sakellaris
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Soergel, Elisabeth
f2f3cfe9-687e-48e9-9166-606087aba7f4
Mitchell, Arnan
33a18604-17e3-421e-b895-0f420d332cd4
Boes, Andreas
67d68086-32d6-4178-b127-2ba768c4ba08
Yudistira, Didit
bf2cb00a-3abb-4486-af87-6ff983f38b87
Crasto, Tristan
3a733e96-ef78-4348-8bbe-376f82906fe2
Steigerwald, Hendrik
979c014a-c7d1-4821-a7d5-617ff740448c
Sivan, Vijay
53434367-05e4-4c6b-8d68-0d7982d71746
Limboeck, Thorsten
0b299acb-2eb5-4347-affe-b5a38b86773a
Friend, James
b596b9a4-c7eb-4df7-b308-296d5afdd4d3
Mailis, Sakellaris
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Soergel, Elisabeth
f2f3cfe9-687e-48e9-9166-606087aba7f4
Mitchell, Arnan
33a18604-17e3-421e-b895-0f420d332cd4

Boes, Andreas, Yudistira, Didit, Crasto, Tristan, Steigerwald, Hendrik, Sivan, Vijay, Limboeck, Thorsten, Friend, James, Mailis, Sakellaris, Soergel, Elisabeth and Mitchell, Arnan (2014) Ultraviolet laser induced domain inversion on chromium coated lithium niobate crystals. Optical Materials, 4 (2), 241-254. (doi:10.1364/OME.4.000241).

Record type: Article

Abstract

Direct UV laser writing on chromium coated lithium niobate (LiNbO3) crystals is found to produce spontaneous domain inversion associated with the exposed UV laser tracks. Experimental evidence suggests that this effect is attributed to local out-diffusion of oxygen, reducing the LiNbO3 crystal surface due to the presence of chromium. The thin chromium film becomes hot and reactive after absorbing the UV laser radiation thus acting as an oxygen getter. This very efficient process enables the inversion of domains at lower intensities as compared to other direct laser based poling methods practically eliminating the deleterious surface damage induced by the direct absorption of the UV laser radiation by the crystal. Furthermore, the versatility of this domain fabrication method, is demonstrated by the production of inverted domain structures on Z-, Y- and 128° YX-cut substrates.

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More information

Published date: 2014
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 361494
URI: https://eprints.soton.ac.uk/id/eprint/361494
PURE UUID: 61e5e7b8-d90d-4712-a78c-5de41f12af88
ORCID for Sakellaris Mailis: ORCID iD orcid.org/0000-0001-8100-2670

Catalogue record

Date deposited: 23 Jan 2014 14:32
Last modified: 20 Mar 2019 01:36

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