Experimental Verification of the Spectral Shift between Near-and Far-Field Peak Intensities<? format?> of Plasmonic Infrared Nanoantennas
Physical review letters, 2013•APS
Theory predicts a distinct spectral shift between the near-and far-field optical response of
plasmonic antennas. Here we combine near-field optical microscopy and far-field
spectroscopy of individual infrared-resonant nanoantennas to verify experimentally this
spectral shift. Numerical calculations corroborate our experimental results. We furthermore
discuss the implications of this effect in surface-enhanced infrared spectroscopy.
plasmonic antennas. Here we combine near-field optical microscopy and far-field
spectroscopy of individual infrared-resonant nanoantennas to verify experimentally this
spectral shift. Numerical calculations corroborate our experimental results. We furthermore
discuss the implications of this effect in surface-enhanced infrared spectroscopy.
Theory predicts a distinct spectral shift between the near- and far-field optical response of plasmonic antennas. Here we combine near-field optical microscopy and far-field spectroscopy of individual infrared-resonant nanoantennas to verify experimentally this spectral shift. Numerical calculations corroborate our experimental results. We furthermore discuss the implications of this effect in surface-enhanced infrared spectroscopy.
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