Advisors

Nanowires

In the past years we developed high pressure melt-filling techniques to incorporate nanowires made of metals [1-3] (Fig. 1) or high-index glasses [4-5] into photonic crystal fibers (PCF). These unique hybrid structures enable the investigation of linear and non-linear light-matter interactions in the areas of plasmonics, nonlinear optics, THz waveguiding and supercontinuum generation [5]. Possible projects include design of linear Paul traps for ions and charged particles in hollow core PCF, advanced nano-tips for scanning near-field optical microscopes, and nanoelectrodes for electro-optic modulation and field measurement. The nanowire team is looking forward to your application.

References

  1. H. W. Lee, M. A. Schmidt and P. St.J. Russell, Excitation of a nanowire “molecule” in gold-filled photonic crystal fiber, Opt. Lett. 37, 2946 (2012).
  2. P. Uebel, M. A. Schmidt, M. Scharrer and P. St.J. Russell, An azimuthally polarizing photonic crystal fiber with a central gold nanowire, New J. Phys. 13, 063016 (2011).
  3. P. Uebel, M. A. Schmidt, H. W. Lee and P. St.J. Russell, Polarisation-resolved near-field mapping of a coupled gold nanowire array, accepted for: Opt. Express (2012).
  4. N. Granzow, P. Uebel, M. A. Schmidt, A. S. Tverjanovich, L. Wondraczek and P. St.J. Russell, Bandgap guidance in hybrid chalcogenide–silica photonic crystal fibershttp://dx.doi.org/10.1364/OE.19.021003, Opt. Lett. 36, 2432 (2011).
  5. N. Granzow, S. P. Stark, M. A. Schmidt, A. S. Tverjanovich, L. Wondraczek and P. St.J. Russell, Supercontinuum generation in chalcogenide-silica step-index fibers, Opt. Express 19, 21003 (2011).

Figure: (a) Sketch of a filled PCF forming a gold nanowire array. (b) Scanning electron micrograph of the cross section showing the nanowires (light grey) in the silica host material (dark grey). (c) Intensity pattern of a dielectric-plasmonic supermode guided in the core and on the first ring of nanowires [2].

Contact:

Patrick Uebel (patrick.uebel@mpl.mpg.de)