期刊
NANO LETTERS
卷 10, 期 5, 页码 1831-1835出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl100528c
关键词
Nanowire; plasmonics; waveguide; polarization
类别
资金
- NSFC [10904171, 90923003, 10625418, 10874233]
- MOST [2006DFB02020, 2009CB930700]
- CAS
- Robert A. Welch foundation [C-1222]
- National Science Foundation [CNS-0421109]
- U.S. Army Research Office [W911NF-04-1-0203]
Nanowire plasmons can be launched by illumination at one terminus of the nanowire and emission can be detected at the other end of the wire. Using polarization dependent dark-held scattering spectroscopy, we measure how the polarization of the emitted light depends on the polarization of the incident light. We observe that the shape of the nanowire termination plays an important role in determining this polarization change. Depending on termination shape, a nanowire can serve as either a polarization-maintaining waveguide, or as a polarization-rotating, nanoscale half-wave plate. The understanding of how plasmonic waveguiding influence the polarization of the guided light is important for optimizing the structure of integrated plasmonic devices
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