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 |
Keywords
- optical confinement and manipulation
- frequency conversion
- surface plasmons
- scattering
- raman