Optica Publishing Group
Browse

Fast laser beam steering into multiple diffraction orders with a single digital micromirror device for time-of-flight lidar

Posted on 2020-07-16 - 21:48
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 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 two 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.

CITE THIS COLLECTION

DataCite
No result found
or
Select your citation style and then place your mouse over the citation text to select it.

SHARE

email

Usage metrics

Applied Optics

AUTHORS (4)

Joshua Rodriguez
Braden Smith
Brandon Hellman
Yuzuru Takashima
need help?