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Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation

Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation
Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation
Self-phase modulation has been observed for ultrashort pulses of wavelength 800nm propagating through a 1 cm-long Ta2O5 rib waveguide. The associated nonlinear refractive index n2 was estimated to be 7.23×10-19 m2/W, which is higher than silica glass by more than one order of magnitude. Femtosecond time of flight measurements based on a Kerr shutter configuration show that the group velocity dispersion is small at a wavelength of 800 nm, confirming that dispersion may be neglected in the estimation of n2 so that a simplified theory can be used with good accuracy.
nonlinear optics, materials, optical materials
1094-4087
5110-5116
Tai, Chao-Yi
5a9a315c-4db0-4809-984f-857a4210ebde
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Perney, Nicholas M.B.
c3fafd4b-a157-4ae3-bb19-eb2bea0d1dde
Netti, M.C.
e565f0dc-9641-4f19-a536-f1c1f01ea0dd
Cattaneo, F.
36d88557-2e46-43a7-871d-b1ed72a45a9e
Finlayson, Chris
06f22a13-8b5b-4168-8630-bef32c6198c8
Baumberg, Jeremy
44ce7dca-7035-4043-9a92-3e8a69a31f72
Tai, Chao-Yi
5a9a315c-4db0-4809-984f-857a4210ebde
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Perney, Nicholas M.B.
c3fafd4b-a157-4ae3-bb19-eb2bea0d1dde
Netti, M.C.
e565f0dc-9641-4f19-a536-f1c1f01ea0dd
Cattaneo, F.
36d88557-2e46-43a7-871d-b1ed72a45a9e
Finlayson, Chris
06f22a13-8b5b-4168-8630-bef32c6198c8
Baumberg, Jeremy
44ce7dca-7035-4043-9a92-3e8a69a31f72

Tai, Chao-Yi, Wilkinson, James S., Perney, Nicholas M.B., Netti, M.C., Cattaneo, F., Finlayson, Chris and Baumberg, Jeremy (2004) Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation. Optics Express, 12 (21), 5110-5116. (doi:10.1364/OPEX.12.005110).

Record type: Article

Abstract

Self-phase modulation has been observed for ultrashort pulses of wavelength 800nm propagating through a 1 cm-long Ta2O5 rib waveguide. The associated nonlinear refractive index n2 was estimated to be 7.23×10-19 m2/W, which is higher than silica glass by more than one order of magnitude. Femtosecond time of flight measurements based on a Kerr shutter configuration show that the group velocity dispersion is small at a wavelength of 800 nm, confirming that dispersion may be neglected in the estimation of n2 so that a simplified theory can be used with good accuracy.

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Published date: 2004
Keywords: nonlinear optics, materials, optical materials

Identifiers

Local EPrints ID: 12467
URI: http://eprints.soton.ac.uk/id/eprint/12467
ISSN: 1094-4087
PURE UUID: 18bb8b0d-613f-47fe-93bb-c2d1f208572d
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

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Date deposited: 17 Nov 2004
Last modified: 17 Dec 2019 02:04

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