Remote-Raman spectroscopy of optically trapped particles by utilizing a hollow optical fiber

T. Katagiri; Y. Morisaki; Y. Matsuura

doi:10.1117/12.864537

27 August 2010 Remote-Raman spectroscopy of optically trapped particles by utilizing a hollow optical fiber

T. Katagiri, Y. Morisaki, Y. Matsuura

Proceedings Volume 7762, Optical Trapping and Optical Micromanipulation VII; 776235 (2010) https://doi.org/10.1117/12.864537
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

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.

Citation Download Citation

T. Katagiri, Y. Morisaki, and 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); https://doi.org/10.1117/12.864537

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