Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation
Tai, Chao-Yi, Wilkinson, James, Perney, Nicholas, Netti, M., 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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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.
|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
|Date Deposited:||17 Nov 2004|
|Last Modified:||21 Nov 2012 17:35|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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