{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/105641"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/105641","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Coherently coupling multiple elements in vertical-cavity surface-emitting laser arrays","abstract":"Vertical-cavity surface-emitting laser (VCSEL) arrays with three or more emitters coherently coupled are the focus of this work. VCSEL arrays have many established applications and reliable coherent VCSEL arrays are a next step in their progression. The key innovation of this work is individual addressability to each array element, which allows for tuning the elements into coherence in photonic crystal ion-implanted VCSEL arrays. The VCSEL array design and fabrication are discussed with an emphasis on achieving a high yield of coherent arrays. Ion- implantation allows individual addressability that enables reliable resonant tuning. In addition, individual addressability provides a means for supermode engineering. A simulation model for linear leaky-mode VCSEL arrays is developed in order to predict the lasing coherent supermode for a specified array structure and relative biasing. The simulation model is verified through comparison to experimental results of a three-element linear array. Several array geometries with multiple elements are fabricated and are demonstrated to operate coherently in a variety of coherent supermode emission patterns. Laser characterization of laser output power, spectra, near-field intensity, and far-field emission are included. The conclusion of this work demonstrates that controlling the far-field emission through specific coherent bias points within a photonic crystal ion-implanted VCSEL array is a viable means for optical mode engineering.","abstract_html":"Vertical-cavity surface-emitting laser (VCSEL) arrays with three or more emitters coherently coupled are the focus of this work. VCSEL arrays have many established applications and reliable coherent VCSEL arrays are a next step in their progression. The key innovation of this work is individual addressability to each array element, which allows for tuning the elements into coherence in photonic crystal ion-implanted VCSEL arrays. The VCSEL array design and fabrication are discussed with an emphasis on achieving a high yield of coherent arrays. Ion- implantation allows individual addressability that enables reliable resonant tuning. In addition, individual addressability provides a means for supermode engineering. A simulation model for linear leaky-mode VCSEL arrays is developed in order to predict the lasing coherent supermode for a specified array structure and relative biasing. The simulation model is verified through comparison to experimental results of a three-element linear array. Several array geometries with multiple elements are fabricated and are demonstrated to operate coherently in a variety of coherent supermode emission patterns. Laser characterization of laser output power, spectra, near-field intensity, and far-field emission are included. The conclusion of this work demonstrates that controlling the far-field emission through specific coherent bias points within a photonic crystal ion-implanted VCSEL array is a viable means for optical mode engineering.","abstract_has_math":false,"creators":["Thompson, Bradley Jay"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Choquette, Kent D","Lyding, Joseph","Lee, Minjoo","Dragic, Peter"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-11-26T20:33:49Z","date_published":"2019-11-26T20:33:49Z","updated_at":"2026-07-22T22:24:44Z","subjects":["vertical cavity surface emitting laser","VCSEL","VCSEL array","laser array","phased array","optical phased array","semiconductor laser array","diode laser array","coherent array","coherent coupling","resonance tuning","laser mode","supermode","multielement array","photonics"],"languages":["en"],"rights":["Copyright 2019 Bradley Jay Thompson"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/105641","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Choquette, Kent D","Lyding, Joseph","Lee, Minjoo","Dragic, Peter"]},{"key":"dc:creator","label":"Author","values":["Thompson, Bradley Jay"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-11-26T20:33:49Z","2019-07-03","2019-08"]},{"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":["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":["vertical cavity surface emitting laser","VCSEL","VCSEL array","laser array","phased array","optical phased array","semiconductor laser array","diode laser array","coherent array","coherent coupling","resonance tuning","laser mode","supermode","multielement array","photonics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2019 Bradley Jay Thompson"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/105641"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Vertical-cavity surface-emitting laser (VCSEL) arrays with three or more emitters coherently coupled are the focus of this work. VCSEL arrays have many established applications and reliable coherent VCSEL arrays are a next step in their progression. The key innovation of this work is individual addressability to each array element, which allows for tuning the elements into coherence in photonic crystal ion-implanted VCSEL arrays. The VCSEL array design and fabrication are discussed with an emphasis on achieving a high yield of coherent arrays. Ion- implantation allows individual addressability that enables reliable resonant tuning. In addition, individual addressability provides a means for supermode engineering. A simulation model for linear leaky-mode VCSEL arrays is developed in order to predict the lasing coherent supermode for a specified array structure and relative biasing. The simulation model is verified through comparison to experimental results of a three-element linear array. Several array geometries with multiple elements are fabricated and are demonstrated to operate coherently in a variety of coherent supermode emission patterns. Laser characterization of laser output power, spectra, near-field intensity, and far-field emission are included. The conclusion of this work demonstrates that controlling the far-field emission through specific coherent bias points within a photonic crystal ion-implanted VCSEL array is a viable means for optical mode engineering.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2019-11-26 without embargo terms","The student, Bradley Thompson, accepted the attached license on 2019-07-03 at 10:13.","The student, Bradley Thompson, submitted this Dissertation for approval on 2019-07-03 at 10:38.","This Dissertation was approved for publication on 2019-07-03 at 16:32.","DSpace SAF Submission Ingestion Package generated from Vireo submission #14149 on 2019-11-26 at 12:50:32","Made available in DSpace on 2019-11-26T20:33:49Z (GMT). No. of bitstreams: 3 THOMPSON-DISSERTATION-2019.pdf: 14007260 bytes, checksum: bae577b9b46745ed4ff57e2d4f0b3542 (MD5) LICENSE.txt: 4213 bytes, checksum: 4186790b8a3974b454550bd359b531ff (MD5) PROQUEST_LICENSE.txt: 4559 bytes, checksum: b1c1b544ffbdd4c93516749f82f4dbe7 (MD5) Previous issue date: 2019-07-03"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Coherently coupling multiple elements in vertical-cavity surface-emitting laser arrays"]}]}],"canonical_facts":{"dc:contributor":["Choquette, Kent D","Lyding, Joseph","Lee, Minjoo","Dragic, Peter"],"dc:creator":["Thompson, Bradley Jay"],"dc:date":["2019-11-26T20:33:49Z","2019-07-03","2019-08"],"dc:description":["Vertical-cavity surface-emitting laser (VCSEL) arrays with three or more emitters coherently coupled are the focus of this work. VCSEL arrays have many established applications and reliable coherent VCSEL arrays are a next step in their progression. The key innovation of this work is individual addressability to each array element, which allows for tuning the elements into coherence in photonic crystal ion-implanted VCSEL arrays. The VCSEL array design and fabrication are discussed with an emphasis on achieving a high yield of coherent arrays. Ion- implantation allows individual addressability that enables reliable resonant tuning. In addition, individual addressability provides a means for supermode engineering. A simulation model for linear leaky-mode VCSEL arrays is developed in order to predict the lasing coherent supermode for a specified array structure and relative biasing. The simulation model is verified through comparison to experimental results of a three-element linear array. Several array geometries with multiple elements are fabricated and are demonstrated to operate coherently in a variety of coherent supermode emission patterns. Laser characterization of laser output power, spectra, near-field intensity, and far-field emission are included. The conclusion of this work demonstrates that controlling the far-field emission through specific coherent bias points within a photonic crystal ion-implanted VCSEL array is a viable means for optical mode engineering.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2019-11-26 without embargo terms","The student, Bradley Thompson, accepted the attached license on 2019-07-03 at 10:13.","The student, Bradley Thompson, submitted this Dissertation for approval on 2019-07-03 at 10:38.","This Dissertation was approved for publication on 2019-07-03 at 16:32.","DSpace SAF Submission Ingestion Package generated from Vireo submission #14149 on 2019-11-26 at 12:50:32","Made available in DSpace on 2019-11-26T20:33:49Z (GMT). No. of bitstreams: 3 THOMPSON-DISSERTATION-2019.pdf: 14007260 bytes, checksum: bae577b9b46745ed4ff57e2d4f0b3542 (MD5) LICENSE.txt: 4213 bytes, checksum: 4186790b8a3974b454550bd359b531ff (MD5) PROQUEST_LICENSE.txt: 4559 bytes, checksum: b1c1b544ffbdd4c93516749f82f4dbe7 (MD5) Previous issue date: 2019-07-03"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/105641"],"dc:language":["en"],"dc:rights":["Copyright 2019 Bradley Jay Thompson"],"dc:subject":["vertical cavity surface emitting laser","VCSEL","VCSEL array","laser array","phased array","optical phased array","semiconductor laser array","diode laser array","coherent array","coherent coupling","resonance tuning","laser mode","supermode","multielement array","photonics"],"dc:title":["Coherently coupling multiple elements in vertical-cavity surface-emitting laser arrays"],"dc:type":["text"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:44Z"}