{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/88241"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/88241","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Helium resonance fluorescence LiDAR","abstract":"Recent advancements in LiDAR for atmospheric applications have allowed measurements to reach higher altitudes and have increased temporal resolu- tion. Increased output power, larger apertures, and higher efficiency detec- tors have made this possible. The helium resonance fluorescence LiDAR has the capability to probe the metastable helium content in the thermosphere and exosphere (within 250 km-750 km), where helium (23S) is most abundant. Strategies have been employed to increase the output power of the He Li- DAR transmitter using fiber amplifier technology, increase the light gathering power of the receiver, and utilize detectors with higher quantum efficiencies at 1083 nm. A 45 W He resonance fluorescence LiDAR transmitter has been designed and fabricated, and is being tested in Urbana, IL, with plans for deployment at an astronomical observatory in the near future. The He reso- nance fluorescence LiDAR has the potential to further our understanding of upper atmosphere dynamics. It will provide insight into metastable helium, its temperature in the upper atmosphere, and atmospheric densities, which affect satellite drag, and possibly pave the way for new applications, such as guide star lasers. The technology may be applied from ground based, as well as satellite based, platforms for global measurement applications. This dissertation discusses the planned approach to detect the first LiDAR gener- ated resonantly fluoresced scattered He photon, details of the He resonance fluorescence LiDAR transmitter, and the simulations for the expected signal return.","abstract_html":"Recent advancements in LiDAR for atmospheric applications have allowed measurements to reach higher altitudes and have increased temporal resolu- tion. Increased output power, larger apertures, and higher efficiency detec- tors have made this possible. The helium resonance fluorescence LiDAR has the capability to probe the metastable helium content in the thermosphere and exosphere (within 250 km-750 km), where helium (23S) is most abundant. Strategies have been employed to increase the output power of the He Li- DAR transmitter using fiber amplifier technology, increase the light gathering power of the receiver, and utilize detectors with higher quantum efficiencies at 1083 nm. A 45 W He resonance fluorescence LiDAR transmitter has been designed and fabricated, and is being tested in Urbana, IL, with plans for deployment at an astronomical observatory in the near future. The He reso- nance fluorescence LiDAR has the potential to further our understanding of upper atmosphere dynamics. It will provide insight into metastable helium, its temperature in the upper atmosphere, and atmospheric densities, which affect satellite drag, and possibly pave the way for new applications, such as guide star lasers. The technology may be applied from ground based, as well as satellite based, platforms for global measurement applications. This dissertation discusses the planned approach to detect the first LiDAR gener- ated resonantly fluoresced scattered He photon, details of the He resonance fluorescence LiDAR transmitter, and the simulations for the expected signal return.","abstract_has_math":false,"creators":["Mangognia, Anthony Dominic"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical & Computer Engineering","degree_department":null,"school":null,"contributors":["Swenson, Gary R.","Dragic, Peter","Franke, Steven J.","Eden, Gary J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-29T21:02:41Z","date_published":"2015-09-29T21:02:41Z","updated_at":"2026-07-22T22:26:31Z","subjects":["Light Radar (LiDAR)","Resonance Fluorescence","Helium"],"languages":["en"],"rights":["Copyright 2015 Anthony Mangognia"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/88241","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Swenson, Gary R.","Dragic, Peter","Franke, Steven J.","Eden, Gary J."]},{"key":"dc:creator","label":"Author","values":["Mangognia, Anthony Dominic"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-29T21:02:41Z","2017-09-30T09:15:32Z","2015-08","2015-05-12","2015-8"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Light Radar (LiDAR)","Resonance Fluorescence","Helium"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2015 Anthony Mangognia"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/88241"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Recent advancements in LiDAR for atmospheric applications have allowed measurements to reach higher altitudes and have increased temporal resolu- tion. Increased output power, larger apertures, and higher efficiency detec- tors have made this possible. The helium resonance fluorescence LiDAR has the capability to probe the metastable helium content in the thermosphere and exosphere (within 250 km-750 km), where helium (23S) is most abundant. Strategies have been employed to increase the output power of the He Li- DAR transmitter using fiber amplifier technology, increase the light gathering power of the receiver, and utilize detectors with higher quantum efficiencies at 1083 nm. A 45 W He resonance fluorescence LiDAR transmitter has been designed and fabricated, and is being tested in Urbana, IL, with plans for deployment at an astronomical observatory in the near future. The He reso- nance fluorescence LiDAR has the potential to further our understanding of upper atmosphere dynamics. It will provide insight into metastable helium, its temperature in the upper atmosphere, and atmospheric densities, which affect satellite drag, and possibly pave the way for new applications, such as guide star lasers. The technology may be applied from ground based, as well as satellite based, platforms for global measurement applications. This dissertation discusses the planned approach to detect the first LiDAR gener- ated resonantly fluoresced scattered He photon, details of the He resonance fluorescence LiDAR transmitter, and the simulations for the expected signal return.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2017-08-01","The student, Anthony Mangognia, accepted the attached license on 2015-05-06 at 16:26.","The student, Anthony Mangognia, submitted this Dissertation for approval on 2015-05-06 at 16:31.","This Dissertation was approved for publication on 2015-05-12 at 11:10.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8238 on 2015-09-29 at 15:04:58","Made available in DSpace on 2015-09-29T21:02:41Z (GMT). No. of bitstreams: 2 MANGOGNIA-DISSERTATION-2015.pdf: 17933250 bytes, checksum: bd810e6452c62cc01520f7b43c0b2cab (MD5) LICENSE.txt: 4214 bytes, checksum: f3e3e34269b73155b7c84a97718c4749 (MD5) Previous issue date: 2015-05-12","Embargo set by: Seth Robbins for item 89521 Lift date: 2017-09-29T21:03:28Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 89521 Lift date: 2017-09-29T21:08:35Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 89521 on 2017-09-30T09:15:32Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Helium resonance fluorescence LiDAR"]}]}],"canonical_facts":{"dc:contributor":["Swenson, Gary R.","Dragic, Peter","Franke, Steven J.","Eden, Gary J."],"dc:creator":["Mangognia, Anthony Dominic"],"dc:date":["2015-09-29T21:02:41Z","2017-09-30T09:15:32Z","2015-08","2015-05-12","2015-8"],"dc:description":["Recent advancements in LiDAR for atmospheric applications have allowed measurements to reach higher altitudes and have increased temporal resolu- tion. Increased output power, larger apertures, and higher efficiency detec- tors have made this possible. The helium resonance fluorescence LiDAR has the capability to probe the metastable helium content in the thermosphere and exosphere (within 250 km-750 km), where helium (23S) is most abundant. Strategies have been employed to increase the output power of the He Li- DAR transmitter using fiber amplifier technology, increase the light gathering power of the receiver, and utilize detectors with higher quantum efficiencies at 1083 nm. A 45 W He resonance fluorescence LiDAR transmitter has been designed and fabricated, and is being tested in Urbana, IL, with plans for deployment at an astronomical observatory in the near future. The He reso- nance fluorescence LiDAR has the potential to further our understanding of upper atmosphere dynamics. It will provide insight into metastable helium, its temperature in the upper atmosphere, and atmospheric densities, which affect satellite drag, and possibly pave the way for new applications, such as guide star lasers. The technology may be applied from ground based, as well as satellite based, platforms for global measurement applications. This dissertation discusses the planned approach to detect the first LiDAR gener- ated resonantly fluoresced scattered He photon, details of the He resonance fluorescence LiDAR transmitter, and the simulations for the expected signal return.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2017-08-01","The student, Anthony Mangognia, accepted the attached license on 2015-05-06 at 16:26.","The student, Anthony Mangognia, submitted this Dissertation for approval on 2015-05-06 at 16:31.","This Dissertation was approved for publication on 2015-05-12 at 11:10.","DSpace SAF Submission Ingestion Package generated from Vireo submission #8238 on 2015-09-29 at 15:04:58","Made available in DSpace on 2015-09-29T21:02:41Z (GMT). No. of bitstreams: 2 MANGOGNIA-DISSERTATION-2015.pdf: 17933250 bytes, checksum: bd810e6452c62cc01520f7b43c0b2cab (MD5) LICENSE.txt: 4214 bytes, checksum: f3e3e34269b73155b7c84a97718c4749 (MD5) Previous issue date: 2015-05-12","Embargo set by: Seth Robbins for item 89521 Lift date: 2017-09-29T21:03:28Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 89521 Lift date: 2017-09-29T21:08:35Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 89521 on 2017-09-30T09:15:32Z."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/88241"],"dc:language":["en"],"dc:rights":["Copyright 2015 Anthony Mangognia"],"dc:subject":["Light Radar (LiDAR)","Resonance Fluorescence","Helium"],"dc:title":["Helium resonance fluorescence LiDAR"],"dc:type":["text"],"thesis:degree_discipline":["Electrical & Computer Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:31Z"}