Raman-Microsampling Technique Applying Optical Levitation by Radiation Pressure
- 1 January 1984
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 38 (1) , 78-83
- https://doi.org/10.1366/0003702844554440
Abstract
We report on a new Raman microprobe technique where micron-sized solid particles are trapped in stable optical potential wells using only the force of radiation pressure from a continuous gas laser. We demonstrate this technique with Raman spectra from spherical and non-spherical particles of sizes ranging between 10–30 μm. The particles are stably supported by a vertical directed focused TEM00-mode cw argon ion laser of ∼500 mW. The latter simultaneously serves as the exciting light source. Several suggestions for improvements of this technique are made.Keywords
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