COMD-free continuous-wave high-power laser diodes by using the multi-section waveguide method
buir.contributor.author | Demir, Abdullah | |
buir.contributor.author | Ebadi, Kaveh | |
buir.contributor.author | Sünnetçioğlu, Ali Kaan | |
buir.contributor.author | Gündoğdu, Sinan | |
buir.contributor.author | Şengül, Serdar | |
buir.contributor.orcid | Demir, Abdullah|0000-0003-4678-0084 | |
buir.contributor.orcid | Ebadi, Kaveh|0000-0002-1559-6199 | |
buir.contributor.orcid | Sünnetçioğlu, Ali Kaan|0000-0002-7183-7321 | |
buir.contributor.orcid | Gündoğdu, Sinan|0000-0001-6698-7336 | |
dc.citation.epage | 124030D-8 | en_US |
dc.citation.issueNumber | 124030D | |
dc.citation.spage | 124030D-1 | |
dc.citation.volumeNumber | 12403 | |
dc.contributor.author | Demir, Abdullah | |
dc.contributor.author | Ebadi, Kaveh | |
dc.contributor.author | Liu, Y. | |
dc.contributor.author | Sünnetçioğlu, Ali Kaan | |
dc.contributor.author | Gündoğdu, Sinan | |
dc.contributor.author | Şengül, Serdar | |
dc.contributor.author | Zhao, Y. | |
dc.contributor.author | Lan, Y. | |
dc.contributor.author | Yang, G. | |
dc.contributor.editor | Zediker, Mark S. | |
dc.contributor.editor | Zucker, Erik P. | |
dc.coverage.spatial | San Francisco, United States | |
dc.date.accessioned | 2024-03-08T08:10:16Z | |
dc.date.available | 2024-03-08T08:10:16Z | |
dc.date.issued | 2023-03-14 | |
dc.department | Institute of Materials Science and Nanotechnology (UNAM) | |
dc.description | Conference name: High-Power Diode Laser Technology XXI 2023 | |
dc.description | Date of Conference: 29 January 2023 - 30 January 2023 | |
dc.description.abstract | Catastrophic 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.eissn | 1996-756X | |
dc.identifier.isbn | 978-151065911-7 | |
dc.identifier.issn | 0277-786X | |
dc.identifier.uri | https://hdl.handle.net/11693/114403 | |
dc.language.iso | en_US | |
dc.publisher | SPIE - International Society for Optical Engineering | |
dc.rights | CC BY 4.0 | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source.title | SPIE - International Society for Optical Engineering. Proceedings | |
dc.subject | Semiconductor laser | |
dc.subject | Laser diode | |
dc.subject | High power | |
dc.subject | Reliability | |
dc.subject | Catastrophic optical damage | |
dc.title | COMD-free continuous-wave high-power laser diodes by using the multi-section waveguide method | |
dc.type | Conference Paper |
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