Surface-enhanced resonance Raman scattering in optical tweezers using co-axial second harmonic generation

P. Jordan, J. Cooper, G. McNay, F.T. Docherty, D. Graham, W.E. Smith, G. Sinclair, M.J. Padgett

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Abstract

Silica particles were partially coated with silver, and a suitable chromophore, such that they could be trapped within an optical tweezers system and simultaneously be excited to emit a surface-enhanced resonance Raman scattering (SERRS) spectrum. A standard 1064 nm TEM00 mode laser was used to trap the bead whilst a frequency doubling crystal inserted into the beam gave several microwatts of 532 nm co-linear light to excite the SERRS emission. The configuration has clear applications in providing apparatus that can manipulate a particle whilst simultaneously obtaining surface sensitive sensory information.
Original languageEnglish
Pages (from-to)4148-4153
Number of pages5
JournalOptics Express
Volume13
Issue number11
Publication statusPublished - 30 May 2005

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Keywords

  • optical confinement and manipulation
  • frequency conversion
  • surface plasmons
  • scattering
  • raman

Cite this

Jordan, P., Cooper, J., McNay, G., Docherty, F. T., Graham, D., Smith, W. E., ... Padgett, M. J. (2005). Surface-enhanced resonance Raman scattering in optical tweezers using co-axial second harmonic generation. Optics Express, 13(11), 4148-4153.