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Proceedings Paper

Compact laser pulser for TOF SPAD rangefinder application
Author(s): L. W. Hallman; K. Haring; L. Toikkanen; T. Leinonen; B. S. Ryvkin; J. T. Kostamovaara
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Paper Abstract

Fundamental mode, ~100 ps, ~40 W optical pulses are demonstrated from a laser diode with a strongly asymmetric waveguide structure and a relatively thick (~0.1 μm) active layer driven with ~15 A, ~1.5 ns injection current pulses produced by a simple avalanche transistor circuit. Using this compact laser source, pulsed time-of-flight laser rangefinding measurements were performed utilizing a single-photon avalanche detector. The results show the feasibility of a very compact overall device with centimeter-level distance measurement precision and walk-error compensated accuracy to passive targets at tens to hundreds of meters in a measurement time of about ten milliseconds.

Paper Details

Date Published: 30 January 2012
PDF: 10 pages
Proc. SPIE 8247, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII, 82471A (30 January 2012); doi: 10.1117/12.908166
Show Author Affiliations
L. W. Hallman, Univ. of Oulu (Finland)
K. Haring, Tampere Univ. of Technology (Finland)
L. Toikkanen, Tampere Univ. of Technology (Finland)
T. Leinonen, Tampere Univ. of Technology (Finland)
B. S. Ryvkin, Univ. of Oulu (Finland)
Ioffe Physico-Technical Institute (Russian Federation)
J. T. Kostamovaara, Univ. of Oulu (Finland)


Published in SPIE Proceedings Vol. 8247:
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII
Alexander Heisterkamp; Michel Meunier; Stefan Nolte, Editor(s)

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