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

doi:10.1117/12.2577288

5 March 2021 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

Proceedings Volume 11698, Emerging Digital Micromirror Device Based Systems and Applications XIII; 116980G (2021) https://doi.org/10.1117/12.2577288
Event: SPIE OPTO, 2021, Online Only

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.

Conference Presentation

Citation Download Citation

Chuan Luo, Brandon Hellman, Guanghao Chen, Joshua Rodriguez, Charles Perkins, Jae-Hyeung Park, and Yuzuru Takashima "Single-chip DMD-based hybrid holographic beam steering for lidar", Proc. SPIE 11698, Emerging Digital Micromirror Device Based Systems and Applications XIII, 116980G (5 March 2021); https://doi.org/10.1117/12.2577288

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