Publication:
Cascaded laser scanning towards high-resolution LiDAR

dc.contributor.coauthorZolfaghari, ParvizFerhanoglu, Onur
dc.contributor.departmentDepartment of Electrical and Electronics Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorÜrey, Hakan
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2025-01-19T10:32:27Z
dc.date.issued2024
dc.description.abstractWe present and demonstrate a cascaded laser scan architecture to achieve a three-fold gain in scan angle. We cascaded multiple piezoelectric MEMS scanners using a high numerical aperture relay lens pair in between scanners, which are located at optical conjugate planes. The cascaded scan architecture comprising 3 scanners is simulated using ray-tracing software. Finally, we conduct experiments using the folded architecture, where the incoming laser beam bounces off the first scan mirror (twice) and the second scan mirror, having nearly identical resonant frequencies of 27.59 kHz, yielding a total optical scan angle of 90 degrees. The observed scan angle exceeds the angle achieved by any single MEMS scanner. One can exploit the use of the back surface of the mirrors, as well as higher numerical aperture lenses to improve the achievable total optical scan to more than double, up to 210 degrees. With further development, the proposed architecture can be integrated into LiDAR systems to achieve high number of resolvable spots on the target, with unprecedented speed and form factor, far beyond what can be achieved with rotating motor or polygon mirror-based architectures.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessBronze
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorship<BOLD>Acknowledgements</BOLD> Mehrdad Khodapanahandeh and Hakan Urey acknowledge the fi-nancial support from TUBITAK (Grant agreement number 120C145) . We thank Sven Holmstrom and Utku Baran for the fabrication of the MEMS scanner.
dc.description.volume168
dc.identifier.doi10.1016/j.optlastec.2023.109906
dc.identifier.eissn1879-2545
dc.identifier.issn0030-3992
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85167965170
dc.identifier.urihttps://doi.org/10.1016/j.optlastec.2023.109906
dc.identifier.urihttps://hdl.handle.net/20.500.14288/26418
dc.identifier.wos1069935400001
dc.keywordsLaser scanning
dc.keywordsMEMS scanner
dc.keywordsLiDAR
dc.language.isoeng
dc.publisherElsevier Sci Ltd
dc.relation.grantnoTUBITAK [120C145]
dc.relation.ispartofOptics and Laser Technology
dc.subjectOptics
dc.subjectPhysics
dc.titleCascaded laser scanning towards high-resolution LiDAR
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorÜrey, Hakan
local.contributor.kuauthorKhodapanahandeh, Mehrdad
local.publication.orgunit1College of Engineering
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit2Department of Electrical and Electronics Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
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