skip to main content
Caltech
Fires burning in Greater Los Angeles area have had significant impact on the Caltech's community and surrounding areas. For information and resources for members of the Caltech community, go to https://www.caltech.edu/fire.

Applied Physics Seminar

Friday, May 18, 2012
4:00pm to 5:00pm
Add to Cal
Spalding Laboratory 106 (Hartley Memorial Seminar Room)
Metal-filled Photonic Crystal Fibers: Plasmonics and Polarizers
Patrick Uebel, Max Planck Institute for the Science of Light, Erlangen,
When the air holes of Photonic Crystal Fibers (PCF) are filled with metals, the optical properties of the waveguide change very strongly. The hybrid structures show pronounced plasmonic resonances while the bulk optical properties of the metal lead to in-fiber polarization effects.

In this talk I give a short introduction to fiber optics, including modal propagation in step-index-fibers, PCF and plasmonic nanowire waveguides. I discuss the fabrication of metal-filled optical fibers and review the basic theory of surface plasmon polaritons coupled to dielectric waveguides. I present our most recent experimental results, including

Generation of octave-spanning, azimuthal polarized supercontinuum (P. Uebel et al. New J. Phys. 2011 (13), 063016, video abstract online) Polarization-resolved near-field mapping using SNOM of a coupled plasmonic waveguide array (P. Uebel et al. CLEO US 2012, CF2M.2) Gold nanotips as plasmonic hot spot generators Plasmonic hybridization of nanowire waveguides (H. Lee et al. Opt. Lett. 2012, submitted)

In particular, I will focus on the SNOM experiment which was done using a customized device from WITec ALPHA300 S.

For more information, please contact Christy Jenstad by phone at 8124 or by email at cjenstad@caltech.edu.