Light dynamics in glass-vanadium dioxide nanocomposite waveguides with thermal nonlinearity.
We address the propagation of laser beams in SiO(2)-VO(2) nanocomposite waveguides with thermo-optical nonlinearity. We show that the large modifications of the absorption coefficient as well as notable changes of the refractive index of VO(2) nanoparticles embedded into the SiO(2) host media that accompany the semiconductor-to-metal phase transition may lead to optical limiting in the near-IR wave range.
ICFO-Institut de Ciencies Fotoniques and Universitat Politecnica de Catalunya, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain. yaroslav.kartashov@icfo.es
Yaroslav V
YV
Kartashov
Victor A
VA
Vysloukh