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 language | English |
|---|---|
| Pages (from-to) | 4148-4153 |
| Number of pages | 5 |
| Journal | Optics Express |
| Volume | 13 |
| Issue number | 11 |
| Publication status | Published - 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.