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3D ultrafast laser scanner

Heisterkamp, Alexander and Mahjoubfar, A. and Goda, Keisuke and Wang, Chao and Fard, Ali M. and Adam, Jost and Gossett, Daniel R. and Ayazi, Ali and Sollier, Elodie and Malik, Omer and Chen, E. and Liu, Y. and Brown, Rupert and Sarkhosh, N. and Di Carlo, Dino and Jalali, Bahram and Herman, Peter R. and Meunier, Michel and Nolte, Stefan (2013) 3D ultrafast laser scanner. In: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII. SPIE, Bellingham, Washington. ISBN 978-0-8194-9380-4. (doi:10.1117/12.2003135) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:35906)

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Laser scanners are essential for scientific research, manufacturing, defense, and medical practice. Unfortunately, often times the speed of conventional laser scanners (e.g., galvanometric mirrors and acousto-optic deflectors) falls short for many applications, resulting in motion blur and failure to capture fast transient information. Here, we present a novel type of laser scanner that offers roughly three orders of magnitude higher scan rates than conventional methods. Our laser scanner, which we refer to as the hybrid dispersion laser scanner, performs inertia-free laser scanning by dispersing a train of broadband pulses both temporally and spatially. More specifically, each broadband pulse is temporally processed by time stretch dispersive Fourier transform and further dispersed into space by one or more diffractive elements such as prisms and gratings. As a proof-of-principle demonstration, we perform 1D line scans at a record high scan rate of 91 MHz and 2D raster scans and 3D volumetric scans at an unprecedented scan rate of 105 kHz. The method holds promise for a broad range of scientific, industrial, and biomedical applications. To show the utility of our method, we demonstrate imaging, nanometer-resolved surface vibrometry, and high-precision flow cytometry with real-time throughput that conventional laser scanners cannot offer due to their low scan rates. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type: Book section
DOI/Identification number: 10.1117/12.2003135
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Tina Thompson
Date Deposited: 01 Nov 2013 10:59 UTC
Last Modified: 16 Feb 2021 12:48 UTC
Resource URI: (The current URI for this page, for reference purposes)
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