Real-time wide-field spectral-scanning FMCW coherent 3D imaging and velocimetry

Journal Article (Journal Article)

We present a real-time spectral-scanning frequencymodulated continuous wave (FMCW) 3D imaging and velocimetry system that can produce 3D depth maps at 33 Hz, with 48°×68° field of view (FOV) and 32.8-cm depth range. Each depth map consists of 507×500 pixels, with 0.095°×0.14° angular resolution and 2.82-mm depth resolution. The system employs a grating for beam steering and a telescope for angular FOV magnification. Quantitative depth, reflectivity, and axial velocity measurements of a static 3D printed depth variation target and amoving robotic arm are demonstrated.

Full Text

Duke Authors

Cited Authors

  • Zhang, J; Qian, R; Zhou, KC; Viehland, C; Draelos, M; Dhalla, AH; Izatt, JA

Published Date

  • August 15, 2022

Published In

Volume / Issue

  • 47 / 16

Start / End Page

  • 4064 - 4067

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/OL.463965

Citation Source

  • Scopus