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    Beam steering by digital micro-mirror device for multi-beam and single-chip lidar

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    Author
    Rodriguez, Joshua M.
    Kang, Eunmo
    Hellman, Brandon
    Chen, Guanghao
    Smith, Braden
    Gin, Adley
    Espinoza, Alonzo
    Takashima, Yuzuru
    Affiliation
    Univ Arizona, Takashima Grp, Coll Opt Sci
    Issue Date
    2018
    Keywords
    optics
    photonics
    lasers
    MEMS
    DMD
    LIDAR
    
    Metadata
    Show full item record
    Publisher
    SPIE-INT SOC OPTICAL ENGINEERING
    Citation
    Joshua Rodriguez, Braden Smith, Eunmo Kang, Brandon Hellman, Guanghao Chen, Adley Gin, Alonzo Espinoza, and Yuzuru Takashima "Beam steering by digital micro-mirror device for multi-beam and single-chip lidar", Proc. SPIE 10757, Optical Data Storage 2018: Industrial Optical Devices and Systems, 107570F (14 September 2018); doi: 10.1117/12.2323757; https://doi.org/10.1117/12.2323757
    Journal
    OPTICAL DATA STORAGE 2018: INDUSTRIAL OPTICAL DEVICES AND SYSTEMS
    Rights
    © (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    A novel method of beam steering, utilizing a mass-produced Digital Micromirror Device (DMD), enables a reliable single chip Light Detection and Ranging (LIDAR) with a large field of view while having minimum moving components. In the single-chip LIDAR, a short-pulsed laser is fired in a synchronous manner to the micromirrors rotation during the transitional state. Since the pulse duration of the laser pulse is substantially short compared to the transitional time of the mirror rotation, virtually the mirror array is frozen in transition at several discrete points, which forms a programmable and blazed grating. The programmable blazed grating efficiently redirects the pulsed light to a single diffraction order among several while employing time of flight measurement. Previously, with a single 905nm nanosecond laser diode and Si avalanche photo diode, a measurement accuracy and rate of <1 cm and 3.34k points/sec, respectively, was demonstrated over a 1m distance range with 48 degrees full field of view and 10 angular resolution. We have also increased the angular resolution by employing multiple laser diodes and a single DMD chip while maintaining a high measurement rate of 3.34k points/s. In addition, we present a pathway to achieve 0.65 degrees resolution with 60 degrees field of view and 23k points/s measurement rate.
    ISSN
    9781510620858
    9781510620865
    DOI
    10.1117/12.2323757
    10.1117/12.2323757.5836673338001
    Version
    Final published version
    Additional Links
    https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10757/2323757/Beam-steering-by-digital-micro-mirror-device-for-multi-beam/10.1117/12.2323757.full
    https://www.spiedigitallibrary.org/conference-presentations/10757/107570F/Beam-steering-by-digital-micro-mirror-device-for-multi-beam/10.1117/12.2323757.5836673338001
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2323757
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