{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/114036"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/114036","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Anti-phase coating for mode control in single-mode oxide-confined vertical-cavity surface-emitting lasers","abstract":"The student, Kevin Pikul, submitted this Thesis for approval on 2021-07-23 at 13:37.","abstract_html":"The student, Kevin Pikul, submitted this Thesis for approval on 2021-07-23 at 13:37.","abstract_has_math":false,"creators":["Pikul, Kevin Peter"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Dallesasse, John M"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-04-29T21:58:12Z","date_published":"2022-04-29T21:58:12Z","updated_at":"2026-07-22T22:24:54Z","subjects":["Vertical-cavity surface-emitting laser","single-transverse fundamental mode","anti-phase coating"],"languages":["en","eng"],"rights":["Copyright 2021 Kevin Peter Pikul"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/114036","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Dallesasse, John M"]},{"key":"dc:creator","label":"Author","values":["Pikul, Kevin Peter"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-04-29T21:58:12Z","2024-04-29T21:58:46Z","2021-12","2021-07-23"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["Vertical-cavity surface-emitting laser","single-transverse fundamental mode","anti-phase coating"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Kevin Peter Pikul"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/114036"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The student, Kevin Pikul, submitted this Thesis for approval on 2021-07-23 at 13:37.","This Thesis was approved for publication on 2021-07-23 at 14:08.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01","The student, Kevin Pikul, accepted the attached license on 2021-07-23 at 10:08.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17079 on 2022-04-29 at 16:08:47","Made available in DSpace on 2022-04-29T21:58:12Z (GMT). No. of bitstreams: 2 PIKUL-THESIS-2021.pdf: 7207345 bytes, checksum: ae0dc641b76e3fb3e424ca8fc6678a05 (MD5) LICENSE.txt: 4208 bytes, checksum: 10849133363573474a1f10c2d5feb4c6 (MD5) Previous issue date: 2021-07-23","Embargo set by: Seth Robbins for item 123401 Lift date: 2024-04-29T21:58:46Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited","The prevalence of Vertical-Cavity Surface-Emitting Lasers (VCSELs) in the technological landscape has increased substantially recently due to many inherent and beneficial device characteristics. For emerging application such as 3D-sensing in smart phones and automobiles, light detection and ranging (LiDAR), and 4-level pulse amplitude modulation (PAM4), VCSELs present solutions not possible otherwise with edge-emitting lasers (EELs) or light-emitting diodes (LEDs). VCSELs inherently exhibit a circular, low-noise and low-dispersing emission beam, operate with low threshold currents, and can be packaged into high-power 2D-arrays because of their unique geometry. Moreover, VCSELs that operate with only a single-fundamental mode in the transverse direction have improvements in these lasing characteristics. Therefore, control of the lasing modes of a VCSEL is essential to meeting the demands of the applications aforementioned. Single-transverse fundamental-mode operation can be achieved many ways, most readily by use of a semiconductor anti-phase coating. By depositing and patterning the coating spatially across the top surface of a VCSEL into the shape of an annulus, the threshold modal gain in the outer region can be selectively increased while minimizing the gain in the center of the device. This coating therefore suppresses the higher order transverse modes and fundamental-mode operation can be achieved. This work explores the development process of 850 nm oxide-confined VCSELs. By first simulating the device structure, the coating can be designed with the appropriate parameters. This is followed up with the fabrication of the VCSEL structure concluding with the characterization of the device for various performance metrics. Thus, the effects of the anti-phase coating are illustrated and single-mode high-power VCSEL operation is realized."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Anti-phase coating for mode control in single-mode oxide-confined vertical-cavity surface-emitting lasers"]}]}],"canonical_facts":{"dc:contributor":["Dallesasse, John M"],"dc:creator":["Pikul, Kevin Peter"],"dc:date":["2022-04-29T21:58:12Z","2024-04-29T21:58:46Z","2021-12","2021-07-23"],"dc:description":["The student, Kevin Pikul, submitted this Thesis for approval on 2021-07-23 at 13:37.","This Thesis was approved for publication on 2021-07-23 at 14:08.","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-12-01","The student, Kevin Pikul, accepted the attached license on 2021-07-23 at 10:08.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17079 on 2022-04-29 at 16:08:47","Made available in DSpace on 2022-04-29T21:58:12Z (GMT). No. of bitstreams: 2 PIKUL-THESIS-2021.pdf: 7207345 bytes, checksum: ae0dc641b76e3fb3e424ca8fc6678a05 (MD5) LICENSE.txt: 4208 bytes, checksum: 10849133363573474a1f10c2d5feb4c6 (MD5) Previous issue date: 2021-07-23","Embargo set by: Seth Robbins for item 123401 Lift date: 2024-04-29T21:58:46Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited","The prevalence of Vertical-Cavity Surface-Emitting Lasers (VCSELs) in the technological landscape has increased substantially recently due to many inherent and beneficial device characteristics. For emerging application such as 3D-sensing in smart phones and automobiles, light detection and ranging (LiDAR), and 4-level pulse amplitude modulation (PAM4), VCSELs present solutions not possible otherwise with edge-emitting lasers (EELs) or light-emitting diodes (LEDs). VCSELs inherently exhibit a circular, low-noise and low-dispersing emission beam, operate with low threshold currents, and can be packaged into high-power 2D-arrays because of their unique geometry. Moreover, VCSELs that operate with only a single-fundamental mode in the transverse direction have improvements in these lasing characteristics. Therefore, control of the lasing modes of a VCSEL is essential to meeting the demands of the applications aforementioned. Single-transverse fundamental-mode operation can be achieved many ways, most readily by use of a semiconductor anti-phase coating. By depositing and patterning the coating spatially across the top surface of a VCSEL into the shape of an annulus, the threshold modal gain in the outer region can be selectively increased while minimizing the gain in the center of the device. This coating therefore suppresses the higher order transverse modes and fundamental-mode operation can be achieved. This work explores the development process of 850 nm oxide-confined VCSELs. By first simulating the device structure, the coating can be designed with the appropriate parameters. This is followed up with the fabrication of the VCSEL structure concluding with the characterization of the device for various performance metrics. Thus, the effects of the anti-phase coating are illustrated and single-mode high-power VCSEL operation is realized."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/114036"],"dc:language":["en","eng"],"dc:rights":["Copyright 2021 Kevin Peter Pikul"],"dc:subject":["Vertical-cavity surface-emitting laser","single-transverse fundamental mode","anti-phase coating"],"dc:title":["Anti-phase coating for mode control in single-mode oxide-confined vertical-cavity surface-emitting lasers"],"dc:type":["text"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:54Z"}