期刊
ACS PHOTONICS
卷 1, 期 10, 页码 912-916出版社
AMER CHEMICAL SOC
DOI: 10.1021/ph5002796
关键词
nano-optics; silicon photonics; plasmonics; nonlinear optics; third-harmonic generation
类别
资金
- UK Engineering and Physical Sciences Research Council (EPSRC)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- EPSRC Fellowship [EP/I004343/1]
- Marie Curie IRG [PIRG08-GA-2010-277080]
- EPSRC [EP/H000917/2, EP/I004343/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I004343/1, EP/H000917/2, 1413825] Funding Source: researchfish
We exploit the strong interaction between a focused free-space beam and an optical antenna to construct a compact and efficient silicon waveguide coupler operating simultaneously in several telecommunications bands. The antenna is a directional coupler tuned by the spacing and relative size of its two constituent nanoparticles. Moreover, the antennas compact size and short scattering lifetime provide a bandwidth sufficient to couple 200 fs pulses at both 1500 and 1350 nm simultaneously. By measuring the third-harmonic generation (THG) from waveguide-coupled light we verify our estimates of the high in-coupling efficiency of these antennas. Coupling efficiencies were estimated to be as high as 19% and 14% at the wavelengths of 1500 and 1350 nm, respectively.
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