Abstract
A digital micromirror device (DMD) based holographic beam steering technique is reported that multiplexes fine-steering binary amplitude gratings with a coarse-steering programmable blazed grating. The angular spatial light modulation (ASLM) technique encodes the spatial pattern of the binary amplitude grating at the same plane as the angular modulation set by a phase map of the DMD-based beam steering technique. The beam steering technique is demonstrated at 532 nm and implemented into a 905 nm lidar system. The results of the lidar system tests are presented, achieving a 44° field-of-view, 0.9°×0.4° (H×V) angular resolution, 1 m max distance, 1.5 kHz sampling, and 7.8 FPS video. Scalability techniques are proposed, including max distance increases to over 100 m.
Original language | English (US) |
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Pages (from-to) | 21993-22011 |
Number of pages | 19 |
Journal | Optics Express |
Volume | 28 |
Issue number | 15 |
DOIs | |
State | Published - Jul 20 2020 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics