Active tailoring of nanoantenna plasmonic fields using few-cycle laser pulses
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SCOPUS
- Title
- Active tailoring of nanoantenna plasmonic fields using few-cycle laser pulses
- Authors
- Choi, S; Ciappina, MF; Perez-Hernandez, J.A.; Landsman, AS; Kim, SC; Kim, YJ; KIM, DONG EON
- Date Issued
- 2016-02-24
- Publisher
- American Physical Society
- Abstract
- Plasmonic nanoatennas are a versatile tool for coherently manipulating light on a nanoscale by confining electric fields of the driving laser into subwavelength volumes, thereby significantly enhancing electric near fields. It is normally assumed that the time-dependent spectral properties of these near fields are independent of the duration of the driving laser pulse. Here we show that when a few-cycle laser pulse shines on a bow-tie nanoantenna, its spectral properties are dramatically modified, as evidenced by a large shift of the center wavelength of the near field, relative to the driving laser. In addition, for certain geometries, a second color appears in the near field, creating conditions for generation of an isolated attosecond pulse at megahertz repetition rate. Our results open the door to frequency-tunable ultrafast sources at nanometer scale without tuning the frequency of the driving laser.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/35983
- DOI
- 10.1103/PHYSREVA.93.021405
- ISSN
- 2469-9926
- Article Type
- Article
- Citation
- PHYSICAL REVIEW A, vol. 93, no. 2, 2016-02-24
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- There are no files associated with this item.
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