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.
© 2011 Optical Society of America
Optical Tweezers or Optical Manipulation
Original Manuscript: April 6, 2011
Manuscript Accepted: April 22, 2011
Published: May 26, 2011
Vol. 6, Iss. 7 Virtual Journal for Biomedical Optics
M. K. Garbos, T. G. Euser, O. A. Schmidt, S. Unterkofler, and P. St.J. Russell, "Doppler velocimetry on microparticles trapped and propelled by laser light in liquid-filled photonic crystal fiber," Opt. Lett. 36, 2020-2022 (2011)