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Size-selective optical forces for microspheres using evanescent wave excitation of whispering gallery modes.
- Source :
-
Applied Physics Letters . 6/23/2008, Vol. 92 Issue 25, p251109. 3p. 2 Graphs. - Publication Year :
- 2008
-
Abstract
- We show that when a microsphere is illuminated by an evanescent wave, the optical forces on- and off-whispering gallery mode (WGM) resonance can differ by several orders of magnitude. Such size-selective force allows one to selectively manipulate the resonating particles, while leaving those particles at off-resonance untouched. As WGM resonances have very high-Q’s, this kind of force could be deployed for size-selective manipulation with a very high accuracy (∼1/Q), as well as simultaneous particle-sorting according to their size or resonant frequency. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 92
- Issue :
- 25
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 32990946
- Full Text :
- https://doi.org/10.1063/1.2951599