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A Raman study of single crystal congruent lithium niobate following electric field repoling

A Raman study of single crystal congruent lithium niobate following electric field repoling
A Raman study of single crystal congruent lithium niobate following electric field repoling
We describe a study of the time dynamics of the spectral position of six major peaks in the Raman spectrum of single-crystal congruent lithium niobate, following the process of electric-field repoling. All of the peaks observed show a small (<1 cm-1) frequency shift after repoling. Two peaks are shifted to higher frequencies while the other four are shifted to lower frequencies. The shift generally recovers over time towards the original value. The 153 cm-1 and 432 cm-1 peaks are seen to recover to their original positions before poling, with time constants of approximately 8 h and 4 h, respectively, whereas the higher frequency peak at 872 cm-1 does not appear to recover at all. The other peaks exhibit incomplete recovery. We compare the measured values of temporal recovery with published relaxation times for internal electric fields, and make an additional comparison with our measured etch-rate data for the -z face of lithium niobate as a function of delay time following repoling.
0947-8396
691-696
Scott, J.G.
a5e576f1-39c6-4c3b-a0e2-42e388e9b583
Mailis, S.
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Sones, C.L.
9de9d8ee-d394-46a5-80b7-e341c0eed0a8
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Scott, J.G.
a5e576f1-39c6-4c3b-a0e2-42e388e9b583
Mailis, S.
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Sones, C.L.
9de9d8ee-d394-46a5-80b7-e341c0eed0a8
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020

Scott, J.G., Mailis, S., Sones, C.L. and Eason, R.W. (2004) A Raman study of single crystal congruent lithium niobate following electric field repoling. Applied Physics A: Materials Science & Processing, 79 (3), 691-696. (doi:10.1007/s00339-003-2249-7).

Record type: Article

Abstract

We describe a study of the time dynamics of the spectral position of six major peaks in the Raman spectrum of single-crystal congruent lithium niobate, following the process of electric-field repoling. All of the peaks observed show a small (<1 cm-1) frequency shift after repoling. Two peaks are shifted to higher frequencies while the other four are shifted to lower frequencies. The shift generally recovers over time towards the original value. The 153 cm-1 and 432 cm-1 peaks are seen to recover to their original positions before poling, with time constants of approximately 8 h and 4 h, respectively, whereas the higher frequency peak at 872 cm-1 does not appear to recover at all. The other peaks exhibit incomplete recovery. We compare the measured values of temporal recovery with published relaxation times for internal electric fields, and make an additional comparison with our measured etch-rate data for the -z face of lithium niobate as a function of delay time following repoling.

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Published date: 2004

Identifiers

Local EPrints ID: 13955
URI: https://eprints.soton.ac.uk/id/eprint/13955
ISSN: 0947-8396
PURE UUID: b9d3dc65-706d-4797-b082-493253efd8cc
ORCID for S. Mailis: ORCID iD orcid.org/0000-0001-8100-2670
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

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Date deposited: 07 Jan 2005
Last modified: 20 Jul 2019 01:25

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Contributors

Author: J.G. Scott
Author: S. Mailis ORCID iD
Author: C.L. Sones
Author: R.W. Eason ORCID iD

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