27 August 2010 Remote-Raman spectroscopy of optically trapped particles by utilizing a hollow optical fiber
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Abstract
A fiber-optic probe based on a hollow optical fiber was developed for highly-sensitive remote-Raman measurements of particles in solution. A lens mounted at the distal end of the fiber was optimally designed to suppress the spherical aberration and maximize the numerical aperture by the ray-optics method, and fabricated by polishing a SrTiO3 ball of 1 mm diameter. Polystyrene particles of 60 μm diameter dispersed in NaCl aqueous solution were three-dimensionally trapped by the prototype probe. The Raman spectrum of the polystyrene particle was clearly observed when the particle was optically trapped at the beam focus.
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T. Katagiri, T. Katagiri, Y. Morisaki, Y. Morisaki, Y. Matsuura, Y. Matsuura, } "Remote-Raman spectroscopy of optically trapped particles by utilizing a hollow optical fiber", Proc. SPIE 7762, Optical Trapping and Optical Micromanipulation VII, 776235 (27 August 2010); doi: 10.1117/12.864537; https://doi.org/10.1117/12.864537
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