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NEW FREQUENCY GENERATION WITH METALLIC NANOANTENNAS ON AS 2 SE 3

NEW FREQUENCY GENERATION WITH METALLIC NANOANTENNAS ON AS 2 SE 3. Hüseyin Duman 1,2 ,* , Murat C. Kılınç 2 , 3 , Bihter Dağlar 1,2 , Tural Khudiyev 1,2 and Mehmet Bay ı nd ı r 1,2 ,4 1 UNAM- National Nanotechnology Research Center , Bilkent University, Ankara 06800, Turkey

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NEW FREQUENCY GENERATION WITH METALLIC NANOANTENNAS ON AS 2 SE 3

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  1. 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 *duman@bilkent.edu.tr 200 nm 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 S.Kim et. al. Nature (2008) Optical tweezer by dipole nanoantenna 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 • Electric field enhancement; • High depth, less enhancement • High intensity, broad spectrum • Incidentlight; • λ = 1500 nm • TM polarized FABRICATION • Metallic nanoantenna; • Free electron resonance • Electric field enhancement • Length: 190 nm • Width and height: 50 nm • Dipole gold nanoantenna array fabricated by FIB • Stripe gold nanoantenna array fabricated by FIB • Stripe gold nanoantennas fabricated by chemical reduction • Anodized Aluminium Oxide membrane • Nonlinear substrate; • High χ(3) • Continuum generation • Third harmonic generation • Electron oscillation 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. SUPPORTS REFERENCES P. Muhlschlegelet al., Science 308, 1607 (2005). E. Cubukcuet al. , Applied Physics Letters 89, 0931201(2006). D. Yoemet al. ,Optics Letters 33, No.7 660 (2008) H. Dumanet al., Applied Physics Letters, Submitted (2011).

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