Journal article
Mixed two- and three-photon absorption in bulk rutile (TiO2) around 800 nm.
Abstract
We observe mixed two- and three-photon absorption in bulk rutile (TiO2) around 800 nm using the open aperture Z-scan technique. We fit the data with an extended model that includes multiphoton absorption, beam quality, and ellipticity. The extracted two- and three-photon absorption coefficients are below 1 mm/GW and 2 mm3/GW2, respectively. We observe negligible two-photon absorption for 813-nm light polarized along the extraordinary axis. We …
Authors
Evans CC; Bradley JDB; Martí-Panameño EA; Mazur E
Journal
Optics Express, Vol. 20, No. 3, pp. 3118–3128
Publisher
Optica Publishing Group
Publication Date
January 30, 2012
DOI
10.1364/oe.20.003118
ISSN
1094-4087