{"id":"https://openalex.org/W3124101035","doi":"https://doi.org/10.3390/s21020670","title":"An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation","display_name":"An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation","publication_year":2021,"publication_date":"2021-01-19","ids":{"openalex":"https://openalex.org/W3124101035","doi":"https://doi.org/10.3390/s21020670","mag":"3124101035","pmid":"https://pubmed.ncbi.nlm.nih.gov/33477976"},"language":"en","primary_location":{"id":"doi:10.3390/s21020670","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s21020670","pdf_url":"https://www.mdpi.com/1424-8220/21/2/670/pdf?version=1611057540","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/21/2/670/pdf?version=1611057540","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5011451143","display_name":"Wijayanti Dwi Astuti","orcid":"https://orcid.org/0000-0002-0317-4589"},"institutions":[{"id":"https://openalex.org/I165230279","display_name":"Universitas Gadjah Mada","ror":"https://ror.org/03ke6d638","country_code":"ID","type":"education","lineage":["https://openalex.org/I165230279"]},{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["ID","JP"],"is_corresponding":false,"raw_author_name":"Wijayanti Dwi Astuti","raw_affiliation_strings":["Department of Electrical Engineering and Informatics, Vocational School, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia","Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Informatics, Vocational School, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia","institution_ids":["https://openalex.org/I165230279"]},{"raw_affiliation_string":"Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048332393","display_name":"Hiraku Matsukuma","orcid":"https://orcid.org/0000-0001-8125-9708"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Hiraku Matsukuma","raw_affiliation_strings":["Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103389001","display_name":"Masaru Nakao","orcid":null},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masaru Nakao","raw_affiliation_strings":["Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086362023","display_name":"Kuangyi Li","orcid":"https://orcid.org/0000-0002-3434-160X"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kuangyi Li","raw_affiliation_strings":["Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019910404","display_name":"Yuki Shimizu","orcid":"https://orcid.org/0000-0003-3527-2869"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuki Shimizu","raw_affiliation_strings":["Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan"],"raw_orcid":"https://orcid.org/0000-0003-3527-2869","affiliations":[{"raw_affiliation_string":"Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079733529","display_name":"Wei Gao","orcid":"https://orcid.org/0000-0001-9336-2729"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Wei Gao","raw_affiliation_strings":["Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan"],"raw_orcid":"https://orcid.org/0000-0001-9336-2729","affiliations":[{"raw_affiliation_string":"Precision Nanometrology Laboratory, Department of Finemechanics, Tohoku University, Sendai 980-8579, Japan","institution_ids":["https://openalex.org/I201537933"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5048332393"],"corresponding_institution_ids":["https://openalex.org/I201537933"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2673},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2673},"fwci":1.7416,"has_fulltext":true,"cited_by_count":25,"citation_normalized_percentile":{"value":0.82108078,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"21","issue":"2","first_page":"670","last_page":"670"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11583","display_name":"Advanced Measurement and Metrology Techniques","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11583","display_name":"Advanced Measurement and Metrology Techniques","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10988","display_name":"Advanced Fiber Laser Technologies","score":0.9973000288009644,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10732","display_name":"Laser Material Processing Techniques","score":0.9872000217437744,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.7864050269126892},{"id":"https://openalex.org/keywords/femtosecond","display_name":"Femtosecond","score":0.6815527081489563},{"id":"https://openalex.org/keywords/laser","display_name":"Laser","score":0.6219975352287292},{"id":"https://openalex.org/keywords/second-harmonic-generation","display_name":"Second-harmonic generation","score":0.5894775390625},{"id":"https://openalex.org/keywords/harmonic","display_name":"Harmonic","score":0.4948105216026306},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.4937947690486908},{"id":"https://openalex.org/keywords/chromatic-aberration","display_name":"Chromatic aberration","score":0.45908892154693604},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.4530073404312134},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.40307456254959106},{"id":"https://openalex.org/keywords/chromatic-scale","display_name":"Chromatic scale","score":0.38430947065353394},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.36352312564849854},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.1345076560974121},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.12586095929145813}],"concepts":[{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.7864050269126892},{"id":"https://openalex.org/C167735695","wikidata":"https://www.wikidata.org/wiki/Q1777507","display_name":"Femtosecond","level":3,"score":0.6815527081489563},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.6219975352287292},{"id":"https://openalex.org/C30713254","wikidata":"https://www.wikidata.org/wiki/Q1455635","display_name":"Second-harmonic generation","level":3,"score":0.5894775390625},{"id":"https://openalex.org/C127934551","wikidata":"https://www.wikidata.org/wiki/Q1148098","display_name":"Harmonic","level":2,"score":0.4948105216026306},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.4937947690486908},{"id":"https://openalex.org/C87367554","wikidata":"https://www.wikidata.org/wiki/Q1087688","display_name":"Chromatic aberration","level":3,"score":0.45908892154693604},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.4530073404312134},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.40307456254959106},{"id":"https://openalex.org/C196956537","wikidata":"https://www.wikidata.org/wiki/Q202021","display_name":"Chromatic scale","level":2,"score":0.38430947065353394},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.36352312564849854},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.1345076560974121},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.12586095929145813},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3390/s21020670","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s21020670","pdf_url":"https://www.mdpi.com/1424-8220/21/2/670/pdf?version=1611057540","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:33477976","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/33477976","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:pubmedcentral.nih.gov:7835813","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/7835813","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors (Basel)","raw_type":"Text"},{"id":"pmh:oai:doaj.org/article:a6f95201ff5f4e2b94a921681a1299be","is_oa":true,"landing_page_url":"https://doaj.org/article/a6f95201ff5f4e2b94a921681a1299be","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 21, Iss 2, p 670 (2021)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1424-8220/21/2/670/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/s21020670","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors; Volume 21; Issue 2; Pages: 670","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s21020670","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s21020670","pdf_url":"https://www.mdpi.com/1424-8220/21/2/670/pdf?version=1611057540","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.6200000047683716,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G7070147770","display_name":"Frontier of the precision optical metrology created by the ultra-precision optical nano-grid reference artifact and the absolute optical scale comb","funder_award_id":"15H05759","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"},{"id":"https://openalex.org/G8332207285","display_name":"Subatomic 3D Ultra-Precision Measurement by Creation of Optical Comb Dimensional Conversion Optics and In-Situ Autonomous Calibration Method","funder_award_id":"20H00211","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"}],"funders":[{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3124101035.pdf","grobid_xml":"https://content.openalex.org/works/W3124101035.grobid-xml"},"referenced_works_count":38,"referenced_works":["https://openalex.org/W605325243","https://openalex.org/W1964161962","https://openalex.org/W1970201703","https://openalex.org/W1975256422","https://openalex.org/W2015107228","https://openalex.org/W2018595389","https://openalex.org/W2039924400","https://openalex.org/W2049736146","https://openalex.org/W2053940238","https://openalex.org/W2063947531","https://openalex.org/W2071555471","https://openalex.org/W2079526767","https://openalex.org/W2088331397","https://openalex.org/W2089703289","https://openalex.org/W2094490329","https://openalex.org/W2101479564","https://openalex.org/W2126942696","https://openalex.org/W2131949350","https://openalex.org/W2268072277","https://openalex.org/W2710575150","https://openalex.org/W2726628778","https://openalex.org/W2809126089","https://openalex.org/W2901056234","https://openalex.org/W2901147901","https://openalex.org/W2938424996","https://openalex.org/W2944413515","https://openalex.org/W2951215190","https://openalex.org/W2961103113","https://openalex.org/W2963703804","https://openalex.org/W2980253950","https://openalex.org/W2985560137","https://openalex.org/W2997615243","https://openalex.org/W3017318362","https://openalex.org/W3018163008","https://openalex.org/W3035083204","https://openalex.org/W3091309479","https://openalex.org/W3095170348","https://openalex.org/W3097465751"],"related_works":["https://openalex.org/W1504153681","https://openalex.org/W2380137857","https://openalex.org/W2055852914","https://openalex.org/W4293227056","https://openalex.org/W2744867079","https://openalex.org/W1814260693","https://openalex.org/W3200937310","https://openalex.org/W4300899303","https://openalex.org/W3034693846","https://openalex.org/W4322712472"],"abstract_inverted_index":{"This":[0],"paper":[1],"proposes":[2],"a":[3,20,48,55,66,85],"new":[4],"optical":[5,11,61],"angle":[6,53,121],"measurement":[7,122],"method":[8],"in":[9,72,106],"the":[10,29,33,42,73,77,79,82,92,96,100,119],"frequency":[12],"domain":[13],"based":[14],"on":[15],"second":[16,103],"harmonic":[17,104],"generation":[18,105],"with":[19],"mode-locked":[21],"femtosecond":[22,43],"laser":[23,44],"source":[24],"by":[25],"making":[26],"use":[27,83],"of":[28,32,41,52,81,84,95,102,127],"unique":[30],"characteristic":[31],"high":[34],"peak":[35],"power":[36],"and":[37],"wide":[38,49],"spectral":[39],"range":[40,51,126],"pulses.":[45],"To":[46],"get":[47],"measurable":[50,125],"measurement,":[54],"theoretical":[56],"calculation":[57],"for":[58,118],"several":[59],"nonlinear":[60],"crystals":[62],"is":[63,70,88,114,130],"performed.":[64],"As":[65],"result,":[67],"LiNbO3":[68],"crystal":[69],"employed":[71],"proposed":[74,120],"method.":[75,123],"In":[76],"experiment,":[78],"validity":[80],"parabolic":[86],"mirror":[87],"also":[89,115],"demonstrated,":[90],"where":[91],"chromatic":[93],"aberration":[94],"focusing":[97],"beam":[98],"caused":[99],"localization":[101],"our":[107],"previous":[108],"research.":[109],"Moreover,":[110],"an":[111],"experimental":[112],"demonstration":[113],"carried":[116],"out":[117],"The":[124],"10,000":[128],"arc-seconds":[129],"achieved.":[131]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":1}],"updated_date":"2026-08-11T07:18:39.950985","created_date":"2025-10-10T00:00:00"}
