title: Development of a fast position-sensitive laser beam detector.
abstract: We report the development of a fast position-sensitive laser beam detector. The detector uses a fiber-optic bundle that spatially splits the incident beam, followed by a fast balanced photodetector. The detector is applied to the study of Brownian motion of particles on fast time scales with 1 A spatial resolution. Future applications include the study of molecule motors, protein folding, as well as cellular processes.
authors.affiliation: Center for Nonlinear Dynamics and the Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA. chavez@physics.utexas.edu
authors.forename: Isaac
authors.initials: I
authors.lastname: Chavez
authors.forename: Rongxin
authors.initials: R
authors.lastname: Huang
authors.forename: Kevin
authors.initials: K
authors.lastname: Henderson
authors.forename: Ernst-Ludwig
authors.initials: EL
authors.lastname: Florin
authors.forename: Mark G
authors.initials: MG
authors.lastname: Raizen