title: Fast three-dimensional laser scanning scheme using acousto-optic deflectors.
abstract: A scheme for fast 3-D laser scanning using acousto-optic deflectors is proposed and demonstrated. By employing counterpropagating acoustic waves that are both chirped and offset in their frequencies, we show that it is possible to simultaneously scan both axially and laterally with frame rates on the order of tens of kilohertz. This scheme was specifically designed for application with multiphoton imaging, particularly of neurons, where it will enable the concurrent monitoring of physiological signals at multiple locations within a microscopic 3-D volume (350 x 350 x 200 microm). When used for this purpose, we demonstrate how this scheme would also inherently compensate for spatial dispersion when ultrafast laser pulses are used in acousto-optic multiphoton microscopy.
authors.affiliation: Rice University, Department of Bioengineering, Houston, Texas 77005, USA.
authors.forename: Gaddum Duemani
authors.initials: GD
authors.lastname: Reddy
authors.forename: Peter
authors.initials: P
authors.lastname: Saggau
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000295:instrumentation* / Q000379:methods; D018613:Microscopy, Confocal / Q000295:instrumentation* / Q000379:methods; D036641:Microscopy, Fluorescence, Multiphoton / Q000295:instrumentation* / Q000379:methods; D055095:Optics and Photonics / Q000295:instrumentation; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity