Abstract
The sampling rate and angular resolution of diffraction-based beam steering employing a digital micromirror device (DMD) can be simultaneously enhanced by at least an order of magnitude by synchronizing multiple nanosecond laser sources and pulses during each DMD actuation. A time-of-flight single-chip DMD lidar with three sources measures a range at a 3.34 kHz sampling rate and a 3.4◦ angular resolution across a 48◦ field of view. Employing multiple diffraction orders of the DMD improves the sampling rate at least by a factor of 2 and up to the number of diffraction orders supported by the DMD. An improved sampling rate of 6.68 kHz with a 9.6◦ angular resolution is experimentally demonstrated by illuminating micromirrors multiple times within a single transition period of the micromirrors.
Original language | English (US) |
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Pages (from-to) | G239-G248 |
Journal | Applied optics |
Volume | 59 |
Issue number | 22 |
DOIs | |
State | Published - Aug 1 2020 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
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Visualization 2.mp4
Takashima, Y. (Creator), Optica Publishing Group, 2020
DOI: 10.6084/m9.figshare.11991615.v1, https://opticapublishing.figshare.com/articles/media/Visualization_2_mp4/11991615/1
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Visualization 1.mp4
Takashima, Y. (Creator), Optica Publishing Group, 2020
DOI: 10.6084/m9.figshare.11991612.v1, https://opticapublishing.figshare.com/articles/media/Visualization_1_mp4/11991612/1
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Visualization 2.mp4
Takashima, Y. (Creator), The Optical Society, 2020
DOI: 10.6084/m9.figshare.11991615, https://osapublishing.figshare.com/articles/Visualization_2_mp4/11991615
Dataset