Doppler velocimetry on microparticles trapped and propelled by laser light in liquid-filled photonic crystal fiber

M. K. Garbos, T. G. Euser, O. A. Schmidt, S. Unterkofler, and P. St.J. Russell

Laser Doppler velocimetry is used to measure very accurately the velocity and position of a microparticle propelled and guided by laser light in liquid-filled photonic crystal fiber. Periodic variations in particle velocity are observed that correlate closely with modal beating between the two lowest order guided fiber modes.

DOI