Translator Disclaimer
10 October 2012 Flexible particle manipulation techniques with conical refraction-based optical tweezers
Author Affiliations +
We present an optimized optical tweezers system based upon the conical refraction of circularly polarized light in a biaxial crystal. The described optical arrangement avoids distortions to the Lloyd plane rings that become apparent when working with circularly polarized light in conventional optical tweezers. We demonstrate that the intensity distribution of the conically diffracted light permits optical manipulation of high and low refractive index particles simultaneously. Such trapping is in three dimensions and not limited to the Lloyd plane rings. By removal of a quarter waveplate the system also permits the study of linearly polarized conical refraction. We show that particle position in the Raman plane is determined by beam power, and indicates that true optical tweezing is not taking place in this part of the beam.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. McDougall, Robert Henderson, David J. Carnegie, Grigorii S. Sokolovskii, Edik U. Rafailov, and David McGloin "Flexible particle manipulation techniques with conical refraction-based optical tweezers", Proc. SPIE 8458, Optical Trapping and Optical Micromanipulation IX, 845824 (10 October 2012);


Laser beams with conical refraction patterns
Proceedings of SPIE (March 04 2014)
An optical trap based on conical refraction of light
Proceedings of SPIE (September 09 2011)
Conical refraction: an experimental introduction
Proceedings of SPIE (April 25 2008)
A 3D interactive optical manipulation platform
Proceedings of SPIE (December 05 2005)

Back to Top