Single-chip DMD-based hybrid holographic beam steering for lidar

Chuan Luo, Brandon Hellman, Guanghao Chen, Joshua Rodriguez, Charles Perkins, Jae Hyeung Park, Yuzuru Takashima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A holographic lidar concept established on the Digital Micromirror Mirror (DMD)-based hybrid light modulation is reported, which multiplexes coarse-steering by sawtooth phase modulation and fine-steering by binary amplitude modulation. The hybrid steering is achieved by overlaying displayed Computer-Generated Holograms (CGHs) with a sawtooth blazed grating phase mask, which the blaze angle programmed by synchronized short-pulse illumination of transitioning micromirrors creating the CGHs. The steering principle is demonstrated as a 2D beam steering scheme with a 532 nm visible pulse laser, and implemented into a 905 nm lidar system with a 44° field-of-view, 0.9°×0.4° angular resolution, 7.8 FPS video frame rate, and 1 m detection distance.

Original languageEnglish (US)
Title of host publicationEmerging Digital Micromirror Device Based Systems and Applications XIII
EditorsJohn Ehmke, Benjamin L. Lee
PublisherSPIE
ISBN (Electronic)9781510642317
DOIs
StatePublished - 2021
EventEmerging Digital Micromirror Device Based Systems and Applications XIII 2021 - Virtual, Online, United States
Duration: Mar 6 2021Mar 11 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11698
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceEmerging Digital Micromirror Device Based Systems and Applications XIII 2021
Country/TerritoryUnited States
CityVirtual, Online
Period3/6/213/11/21

Keywords

  • beam steering
  • DMD
  • holographic lidar
  • hybrid light modulation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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