Microring quantum cascade surface emitting lasers
We miniaturize a vertically coupled in-plane whispering gallery mode cavity incorporating a quantum cascade gain medium, aiming to realize the mid-infrared counterpart to the vertical cavity surface emitting laser. Building on previous work with linear microcavities, we introduce a new type of quant...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0245311 |
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| author | David Stark Mattias Beck Jérôme Faist |
| author_facet | David Stark Mattias Beck Jérôme Faist |
| author_sort | David Stark |
| collection | DOAJ |
| description | We miniaturize a vertically coupled in-plane whispering gallery mode cavity incorporating a quantum cascade gain medium, aiming to realize the mid-infrared counterpart to the vertical cavity surface emitting laser. Building on previous work with linear microcavities, we introduce a new type of quantum cascade surface emitting laser (QCSEL) by miniaturizing a buried heterostructure ring cavity. At wavelengths of 4.5 and 8 μm, we investigate the optical losses for decreasing ring diameters while benchmarking the device performance against linear microcavities. We achieve an equivalent mirror reflectivity of 0.95 and demonstrate lasing with ring diameters as small as 50 μm. Finally, we report a continuous-wave threshold power dissipation of 274 mW for a 100 μm diameter ring QCSEL, characterized on wafer level at 20 °C. |
| format | Article |
| id | doaj-art-1a45d0dcb1004cc6a415b14f04cd068f |
| institution | Kabale University |
| issn | 2378-0967 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj-art-1a45d0dcb1004cc6a415b14f04cd068f2025-02-03T16:36:22ZengAIP Publishing LLCAPL Photonics2378-09672025-01-01101016122016122-610.1063/5.0245311Microring quantum cascade surface emitting lasersDavid Stark0Mattias Beck1Jérôme Faist2Department of Physics, Institute for Quantum Electronics, ETH Zürich, 8093 Zürich, SwitzerlandDepartment of Physics, Institute for Quantum Electronics, ETH Zürich, 8093 Zürich, SwitzerlandDepartment of Physics, Institute for Quantum Electronics, ETH Zürich, 8093 Zürich, SwitzerlandWe miniaturize a vertically coupled in-plane whispering gallery mode cavity incorporating a quantum cascade gain medium, aiming to realize the mid-infrared counterpart to the vertical cavity surface emitting laser. Building on previous work with linear microcavities, we introduce a new type of quantum cascade surface emitting laser (QCSEL) by miniaturizing a buried heterostructure ring cavity. At wavelengths of 4.5 and 8 μm, we investigate the optical losses for decreasing ring diameters while benchmarking the device performance against linear microcavities. We achieve an equivalent mirror reflectivity of 0.95 and demonstrate lasing with ring diameters as small as 50 μm. Finally, we report a continuous-wave threshold power dissipation of 274 mW for a 100 μm diameter ring QCSEL, characterized on wafer level at 20 °C.http://dx.doi.org/10.1063/5.0245311 |
| spellingShingle | David Stark Mattias Beck Jérôme Faist Microring quantum cascade surface emitting lasers APL Photonics |
| title | Microring quantum cascade surface emitting lasers |
| title_full | Microring quantum cascade surface emitting lasers |
| title_fullStr | Microring quantum cascade surface emitting lasers |
| title_full_unstemmed | Microring quantum cascade surface emitting lasers |
| title_short | Microring quantum cascade surface emitting lasers |
| title_sort | microring quantum cascade surface emitting lasers |
| url | http://dx.doi.org/10.1063/5.0245311 |
| work_keys_str_mv | AT davidstark microringquantumcascadesurfaceemittinglasers AT mattiasbeck microringquantumcascadesurfaceemittinglasers AT jeromefaist microringquantumcascadesurfaceemittinglasers |