"Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source"in Optics Express, Vol. 28 of OSA (The Optical Society)
"Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source" has been published in Optics Express, Vol. 28 of OSA (The Optical Society)
Abstract:
Light detection and ranging (Lidar*1) has long been used in various applications. Solid-state beam steering mechanisms are needed for robust lidar systems. Here we propose and demonstrate a lidar scheme called “Swept Source Lidar™*2” that allows us to perform frequency-modulated continuous-wave (FMCW) ranging and nonmechanical beam steering simultaneously. Wavelength dispersive elements provide angular beam steering, while a laser frequency is continuously swept by a wideband swept source over its whole tuning bandwidth. Employing a tunable vertical-cavity surface-emitting laser and a 1-axis mechanical beam scanner, three-dimensional point cloud data has been obtained. Swept Source Lidar systems can be flexibly combined with various beam steering elements to realize full solid-state FMCW lidar systems.
*1.Lidar is becoming ubiquitous for distance measurements in various applications, including autonomous driving, robotics, and three-dimensional sensing. In recent years, solid-state lidar systems, which have no moving components, have attracted more attention in industries where robustness and stability are critical.
*2.“Swept Source Lidar™” is a trademark of Santec Corporation.
Paper reference:
Masayuki Okano and Changho Chong, "Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source," Optics Express, Vol. 28, Issue 16, pp. 23898-23915 (2020).
https://doi.org/10.1364/OE.396707
© 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Abstract:
Light detection and ranging (Lidar*1) has long been used in various applications. Solid-state beam steering mechanisms are needed for robust lidar systems. Here we propose and demonstrate a lidar scheme called “Swept Source Lidar™*2” that allows us to perform frequency-modulated continuous-wave (FMCW) ranging and nonmechanical beam steering simultaneously. Wavelength dispersive elements provide angular beam steering, while a laser frequency is continuously swept by a wideband swept source over its whole tuning bandwidth. Employing a tunable vertical-cavity surface-emitting laser and a 1-axis mechanical beam scanner, three-dimensional point cloud data has been obtained. Swept Source Lidar systems can be flexibly combined with various beam steering elements to realize full solid-state FMCW lidar systems.
*1.Lidar is becoming ubiquitous for distance measurements in various applications, including autonomous driving, robotics, and three-dimensional sensing. In recent years, solid-state lidar systems, which have no moving components, have attracted more attention in industries where robustness and stability are critical.
*2.“Swept Source Lidar™” is a trademark of Santec Corporation.
Paper reference:
Masayuki Okano and Changho Chong, "Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source," Optics Express, Vol. 28, Issue 16, pp. 23898-23915 (2020).
https://doi.org/10.1364/OE.396707
© 2020 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
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