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Plasmonic Circuits – Faster, Smaller, Greener - Nanofocusing of Light
The task of this project is to investigate more complex mechanism to improve the efficiency of the focusing process by means of concept development/improvement, simulation and experiments.
Plasmonic nanofocusing structures opens up unique avenues for faster and smaller detection and light manipulation schemes on the nanoscale. They can confine light into volumes of only a few nm3, which leads to extreme field enhancements (up to 1000 times).
Plasmonic nanofocusing structures opens up unique avenues for faster and smaller detection and light manipulation schemes on the nanoscale. They can confine light into volumes of only a few nm3, which leads to extreme field enhancements (up to 1000 times).
The main principles of nanofocusing were formulated over a decade ago. But only recently first experimental verifications of simplest concepts were achieved. In our research we utilize these structures to focus light from photonic (several μm2) to plasmonic (tens of nm2) components. The task of this project is to investigate more complex mechanism to improve the efficiency of the focusing process by means of concept development/improvement, simulation and experiments.
The main principles of nanofocusing were formulated over a decade ago. But only recently first experimental verifications of simplest concepts were achieved. In our research we utilize these structures to focus light from photonic (several μm2) to plasmonic (tens of nm2) components. The task of this project is to investigate more complex mechanism to improve the efficiency of the focusing process by means of concept development/improvement, simulation and experiments.
**Figure a)** SEM image of a fabricated 3D nanofocusing device. **Figure b)** Cross-sectional side views of the E2 profiles along the y-z-plane for the small tip (SiO2 80 nm x 14 nm). **Figure c)** Cross-sectional side views of the E2 profiles along the y-z-plane for the small tip (SiO2 500 nm x 200 nm).
Choo, H., M.-K. Kim, M. Staffaroni, T. J. Seok, J. Bokor, S. Cabrini, P. J. Schuck, M. C. Wu and E. Yablonovitch (2012). "Nanofocusing in a metal-insulator-metal gap plasmon waveguide with a three-dimensional linear taper." Nat Photon 6(12): 838-844
**Figure a)** SEM image of a fabricated 3D nanofocusing device. **Figure b)** Cross-sectional side views of the E2 profiles along the y-z-plane for the small tip (SiO2 80 nm x 14 nm). **Figure c)** Cross-sectional side views of the E2 profiles along the y-z-plane for the small tip (SiO2 500 nm x 200 nm).
Choo, H., M.-K. Kim, M. Staffaroni, T. J. Seok, J. Bokor, S. Cabrini, P. J. Schuck, M. C. Wu and E. Yablonovitch (2012). "Nanofocusing in a metal-insulator-metal gap plasmon waveguide with a three-dimensional linear taper." Nat Photon 6(12): 838-844
- 10% theory
- 50% simulation
- 40% experiment
- 10% theory - 50% simulation - 40% experiment
Interest in working at the cutting edge of research.
Christian Haffner, ETZ K 76
Wolfgang Heni, ETZ K 93
Prof. Dr. Leuthold, ETZ K 81
Gloriastrasse 35
8092 Zurich
Phone: +41 44 632 53 57
Mail: haffnerc@ethz.ch, wheni@ethz.ch