Reference free Chi 3 dispersion measurements in planar tantalum pentoxide waveguides

Chen, Ruiqi, Charlton, Martin and Lagoudakis, Pavlos (2009) Reference free Chi 3 dispersion measurements in planar tantalum pentoxide waveguides. In Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III. vol. 7420, SPIE. pp. 1-12 . (doi:10.1117/12.825085).

Record type: Conference or Workshop Item (Paper)

Abstract

We utilize analysis of third harmonic generation under femtosecond pulsed excitation as a reference free measurement method for third order nonlinear susceptibility (? (3) or “Chi 3”) of planar waveguides. We investigate ? (3) dispersion in planar Ta2O5 waveguides at wavelengths either side of the telecoms window, obtaining a nonlinear coefficient of 2 ×10?13 esu, at 1550 nm. Our study indicates that ? (3) increases within the measured wavelength range due to a threephoton resonance of Ta2O5 electrons, revealing the potential of this material system in high speed integrated nonlinear optical switches for the telecommunications spectral window.

Text

SPIE_manuscript_for_approval_v2.pdf - Other

Download (2MB)

More information

Published date: 21 August 2009

Venue - Dates: Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications III, , San Diego, United States, 2009-08-01

Organisations: Nanoelectronics and Nanotechnology