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Optica Publishing Group
  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies
  • Technical Digest (CD) (Optica Publishing Group, 2005),
  • paper CFN7

Nanometer Axial Position Sensing in Optical Tweezers by Using Differential Confocal Microscopy

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Abstract

We use differential confocal microscopy for axial detection in optical tweezers. The fluctuation of a 3 µm bead is about 10 nm at 16 mW. This technique is employed for studying protein elasticity and microrheology.

© 2005 Optical Society of America

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