Efficient Third Harmonic Generation from Metal–Dielectric Hybrid Nanoantennas
نویسندگان
چکیده
منابع مشابه
ZnO nanorods for efficient third harmonic UV generation
ZnO nanorods grown by both high temperature vapour phase transport and low temperature chemical bath deposition are very promising sources for UV third harmonic generation. Material grown by both methods show comparable efficiencies, in both cases an order of magnitude higher than surface third harmonic generation at the quartz-air interface of a bare quartz substrate. This result is in stark c...
متن کاملSymmetry-selective third-harmonic generation from plasmonic metacrystals.
Nonlinear processes are often governed by selection rules imposed by the symmetries of the molecular configurations. The most well-known examples include the role of centrosymmetry breaking for the generation of even harmonics, and the selection rule related to the rotational symmetry in harmonic generation for fundamental beams with circular polarizations. While the role of centrosymmetry brea...
متن کاملRole of antenna modes and field enhancement in second harmonic generation from dipole nanoantennas.
We study optical second harmonic generation from metallic dipole antennas with narrow gaps. Enhancement of the fundamental-frequency field in the gap region plays a marginal role on conversion efficiency. In the symmetric configuration, i.e., with the gap located at the center of the antenna axis, reducing gap size induces a significant red-shift of the maximum conversion efficiency peak. Eithe...
متن کاملEfficient Generation of Third Harmonic Radiation in Air Filaments: a Revisit
In this paper we revisit the third harmonic generation from a femtosecond laser filament in air and its significant enhancement (~ 100 times) with a intercepting pump pulse, which has been reported very recently. The enhanced third harmonic is studied as a function of the pulse polarization, time delay between the pump and signal pulses, laser pulse energy, etc. We provide an explanation for th...
متن کاملSimultaneous four-photon luminescence, third-harmonic generation, and second-harmonic generation microscopy of GaN.
We demonstrate what is to our knowledge the first example of four-photon luminescence microscopy in GaN and apply it to quality mapping of bulk GaN. The simultaneously acquired second- and third-harmonic generation can be used to map the distribution of the piezoelectric field and the band-tail state density, respectively. Through spectrum- and power-dependent studies, the fourth power dependen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nano Letters
سال: 2017
ISSN: 1530-6984,1530-6992
DOI: 10.1021/acs.nanolett.7b00462