COMD-free continuous-wave high-power laser diodes by using the multi-section waveguide method

buir.contributor.authorDemir, Abdullah
buir.contributor.authorEbadi, Kaveh
buir.contributor.authorSünnetçioğlu, Ali Kaan
buir.contributor.authorGündoğdu, Sinan
buir.contributor.authorŞengül, Serdar
buir.contributor.orcidDemir, Abdullah|0000-0003-4678-0084
buir.contributor.orcidEbadi, Kaveh|0000-0002-1559-6199
buir.contributor.orcidSünnetçioğlu, Ali Kaan|0000-0002-7183-7321
buir.contributor.orcidGündoğdu, Sinan|0000-0001-6698-7336
dc.citation.epage124030D-8en_US
dc.citation.issueNumber124030D
dc.citation.spage124030D-1
dc.citation.volumeNumber12403
dc.contributor.authorDemir, Abdullah
dc.contributor.authorEbadi, Kaveh
dc.contributor.authorLiu, Y.
dc.contributor.authorSünnetçioğlu, Ali Kaan
dc.contributor.authorGündoğdu, Sinan
dc.contributor.authorŞengül, Serdar
dc.contributor.authorZhao, Y.
dc.contributor.authorLan, Y.
dc.contributor.authorYang, G.
dc.contributor.editorZediker, Mark S.
dc.contributor.editorZucker, Erik P.
dc.coverage.spatialSan Francisco, United States
dc.date.accessioned2024-03-08T08:10:16Z
dc.date.available2024-03-08T08:10:16Z
dc.date.issued2023-03-14
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)
dc.descriptionConference name: High-Power Diode Laser Technology XXI 2023
dc.descriptionDate of Conference: 29 January 2023 - 30 January 2023
dc.description.abstractCatastrophic optical mirror damage (COMD) limits the output power and reliability of laser diodes (LDs). The self-heating of the laser contributes to the facet temperature, but it has not been addressed so far. This study investigates a two-section waveguide method targeting significantly reduced facet temperatures. The LD waveguide is divided into two electrically isolated sections along the cavity: laser and passive waveguide. The laser section is pumped at high current levels to achieve laser output. The passive waveguide is biased at low injection currents to obtain a transparent waveguide with negligible heat generation. This design limits the thermal impact of the laser section on the facet, and a transparent waveguide allows lossless transport of the laser to the output facet. Fabricated GaAs-based LDs have waveguide dimensions of (5-mm) x (100-µm) with passive waveguide section lengths varied from 250 to 1500 µm. The lasers were operated continuous-wave up to the maximum achievable power of around 15 W. We demonstrated that the two-section waveguide method effectively separates the heat load of the laser from the facet and results in much lower facet temperatures (Tf). For instance, at 8 A of laser current, the standard laser has Tf = 90 oC, and a two-section laser with a 1500 µm long passive waveguide section has Tf = 60 oC. While traditional LDs show COMD failures, the multi-section waveguide LDs are COMD-free. Our technique and results provide a pathway for high-reliability LDs, which would find diverse applications in semiconductor lasers. © 2023 SPIE.
dc.identifier.eissn1996-756X
dc.identifier.isbn978-151065911-7
dc.identifier.issn0277-786X
dc.identifier.urihttps://hdl.handle.net/11693/114403
dc.language.isoen_US
dc.publisherSPIE - International Society for Optical Engineering
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.source.titleSPIE - International Society for Optical Engineering. Proceedings
dc.subjectSemiconductor laser
dc.subjectLaser diode
dc.subjectHigh power
dc.subjectReliability
dc.subjectCatastrophic optical damage
dc.titleCOMD-free continuous-wave high-power laser diodes by using the multi-section waveguide method
dc.typeConference Paper

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