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


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.

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Description/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.

Item Type: Article
ISSNs: 1094-4087 (print)
Related URLs:
Keywords: nonlinear optics, materials, optical materials
Subjects: Q Science > QC Physics
R Medicine > RE Ophthalmology
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > School of Electronics and Computer Science
University Structure - Pre August 2011 > Optoelectronics Research Centre
University Structure - Pre August 2011 > School of Physics and Astronomy
ePrint ID: 12467
Date Deposited: 17 Nov 2004
Last Modified: 26 Sep 2014 12:12
Projects:
NanoPhotonics Portfolio Partnership
Funded by: EPSRC (EP/C511786/1)
October 2004 to December 2009
URI: http://eprints.soton.ac.uk/id/eprint/12467

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