3
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Light depolarization induced by metallic tips in apertureless near-field optical microscopy and tip-enhanced Raman spectroscopy

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references24

          • Record: found
          • Abstract: not found
          • Article: not found

          The Raman effect in crystals

          R. Loudon (1964)
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Phonon-enhanced light matter interaction at the nanometre scale.

            Optical near fields exist close to any illuminated object. They account for interesting effects such as enhanced pinhole transmission or enhanced Raman scattering enabling single-molecule spectroscopy. Also, they enable high-resolution (below 10 nm) optical microscopy. The plasmon-enhanced near-field coupling between metallic nanostructures opens new ways of designing optical properties and of controlling light on the nanometre scale. Here we study the strong enhancement of optical near-field coupling in the infrared by lattice vibrations (phonons) of polar dielectrics. We combine infrared spectroscopy with a near-field microscope that provides a confined field to probe the local interaction with a SiC sample. The phonon resonance occurs at 920 cm(-1). Within 20 cm(-1) of the resonance, the near-field signal increases 200-fold; on resonance, the signal exceeds by 20 times the value obtained with a gold sample. We find that phonon-enhanced near-field coupling is extremely sensitive to chemical and structural composition of polar samples, permitting nanometre-scale analysis of semiconductors and minerals. The excellent physical and chemical stability of SiC in particular may allow the design of nanometre-scale optical circuits for high-temperature and high-power operation.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Theory of Nanometric Optical Tweezers

                Bookmark

                Author and article information

                Journal
                Nanotechnology
                Nanotechnology
                IOP Publishing
                0957-4484
                1361-6528
                May 28 2008
                May 28 2008
                April 23 2008
                : 19
                : 21
                : 215702
                Article
                10.1088/0957-4484/19/21/215702
                6160a7e7-ec92-4c2f-97fd-ac2a898a2472
                © 2008
                History

                Comments

                Comment on this article