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Report
NEW FREQUENCY
GENERATION WITH METALLIC
NANOANTENNAS ON AS2SE3
Hüseyin Duman1,2,* , Murat C. Kılınç2,3, Bihter Dağlar1,2, Tural Khudiyev1,2 and Mehmet Bayındır1,2,4
1UNAM-National
Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
2Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
3ASELSAN, Etlik, Ankara 06011, Turkey
4Department of Physics, Bilkent University, Ankara 06800, Turkey
[email protected]
SIMULATION
NANOANTENNAS
Nanoantennas can transrecieve UV-VIS-IR light resonantly
opening up new possibilities in;
 Optical tweezers
 Surface enhanced raman spectroscopy (SERS)
 High-sensitivity detectors
 High-density optical data storage
 High-harmonic generation
Nanoantenna on nanometer scale detector
L. Tang et. al. Nat. Photonics (2008)
Resonance;
 Antenna length
 Source wavelength
 Substrate dielectricity
Bow tie nanoantenna array
Optical tweezer by dipole nanoantenna
S.Kim et. al. Nature (2008)
M. L. Juan et. al. Nat. Photonics (2011)
NEW FREQUENCY GENERATION
New freaquency generation for;
 All optical signal processing
 Broadband lasers
 Quantum metrology
 Single molecule spectroscopy
All optical chip illisturation
IBM (2011)
STRUCTURE AND THEORY
Excitation intensity;
 Threshold for nonlinear effects
 High intensity, broad spectrum
Incident light;
 λ = 1500 nm
 TM polarized
Metallic nanoantenna;
 Free electron resonance
 Electric field enhancement
 Length: 190 nm
 Width and height: 50 nm
Electric field enhancement;
 High depth, less enhancement
 High intensity, broad spectrum
FABRICATION
Stripe gold nanoantenna array
fabricated by FIB
Dipole gold nanoantenna array
fabricated by FIB
200 nm
Stripe gold nanoantennas
fabricated by chemical reduction
Nonlinear substrate;
 High χ(3)
 Continuum generation
 Third harmonic generation
 Electron oscillation
Anodized Aluminium Oxide
membrane
CONCLUSION
We demonstrate that the near field enhancement of the resonant optical nanoantenna
lowers the required large incident electric field for optical nonlinear effects.
We achieved more than 500 nm spectral broadening. We showed that a small
distance, about 30 nm, is enough to observe nonlinear effects,compared to nanowires.
REFERENCES
P. Muhlschlegel et al., Science 308, 1607 (2005).
E. Cubukcu et al. , Applied Physics Letters 89, 0931201(2006).
D. Yoem et al. ,Optics Letters 33, No.7 660 (2008)
H. Duman et al., Applied Physics Letters, Submitted (2011).
SUPPORTS

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