Near-field infrared absorption of plasmonic semiconductor microparticles studied using atomic force microscope infrared spectroscopy

Jonathan R. Felts, Stephanie Law, Christopher M. Roberts, Viktor Podolskiy, Daniel M. Wasserman, William P. King

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We report measurements of near-field absorption in heavily silicon-doped indium arsenide microparticles using atomic force microscope infrared spectroscopy (AFM-IR). The microparticles exhibit an infrared absorption peak at 5.75 μm, which corresponds to a localized surface plasmon resonance within the microparticles. The near-field absorption measurements agree with far-field measurements of transmission and reflection, and with results of numerical solutions of Maxwell equations. AFM-IR measurements of a single microparticle show the temperature increase expected from Ohmic heating within the particle, highlighting the potential for high resolution infrared imaging of plasmonic and metamaterial structures.

Original languageEnglish (US)
Article number152110
JournalApplied Physics Letters
Volume102
Issue number15
DOIs
StatePublished - Apr 15 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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