In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers
In this paper, we have examined the influence of electroplated gold thickness on the thermal and electro-optical properties of mid-IR AlInAs/InGaAs, InP QCLs. The experimental results show a significant reduction of the temperature of QCL active region (AR) with increasing gold layer thickness. For...
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2021-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/23/7352 |
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| author | Dorota Pierścińska Kamil Pierściński Grzegorz Sobczak Katarzyna Krajewska Krzysztof Chmielewski Aleksandr Kuźmicz Krzysztof Piskorski Piotr Gutowski |
| author_facet | Dorota Pierścińska Kamil Pierściński Grzegorz Sobczak Katarzyna Krajewska Krzysztof Chmielewski Aleksandr Kuźmicz Krzysztof Piskorski Piotr Gutowski |
| author_sort | Dorota Pierścińska |
| collection | DOAJ |
| description | In this paper, we have examined the influence of electroplated gold thickness on the thermal and electro-optical properties of mid-IR AlInAs/InGaAs, InP QCLs. The experimental results show a significant reduction of the temperature of QCL active region (AR) with increasing gold layer thickness. For QCLs with 5.0 μm gold thickness, we observed a 50% reduction of the active region temperature. An improvement of key electro-optical parameters, that is, threshold current density and maximum emitted power for structures with thick gold, was observed. The results of micro-Raman characterization show that the electroplated gold layer introduces only moderate compressive strain in top InP cladding, which is well below the critical value for the creation of misfit dislocations. |
| first_indexed | 2024-03-10T04:49:33Z |
| format | Article |
| id | doaj.art-9ebd4196ebb2410080acdec891360e62 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:49:33Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-9ebd4196ebb2410080acdec891360e622023-11-23T02:42:23ZengMDPI AGMaterials1996-19442021-11-011423735210.3390/ma14237352In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade LasersDorota Pierścińska0Kamil Pierściński1Grzegorz Sobczak2Katarzyna Krajewska3Krzysztof Chmielewski4Aleksandr Kuźmicz5Krzysztof Piskorski6Piotr Gutowski7Łukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandŁukasiewicz Instytut Mikroelektroniki i Fotoniki (Ł-IMiF), 02-668 Warsaw, PolandIn this paper, we have examined the influence of electroplated gold thickness on the thermal and electro-optical properties of mid-IR AlInAs/InGaAs, InP QCLs. The experimental results show a significant reduction of the temperature of QCL active region (AR) with increasing gold layer thickness. For QCLs with 5.0 μm gold thickness, we observed a 50% reduction of the active region temperature. An improvement of key electro-optical parameters, that is, threshold current density and maximum emitted power for structures with thick gold, was observed. The results of micro-Raman characterization show that the electroplated gold layer introduces only moderate compressive strain in top InP cladding, which is well below the critical value for the creation of misfit dislocations.https://www.mdpi.com/1996-1944/14/23/7352quantum cascade lasersthermoreflectanceRaman spectroscopygold electroplating |
| spellingShingle | Dorota Pierścińska Kamil Pierściński Grzegorz Sobczak Katarzyna Krajewska Krzysztof Chmielewski Aleksandr Kuźmicz Krzysztof Piskorski Piotr Gutowski In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers Materials quantum cascade lasers thermoreflectance Raman spectroscopy gold electroplating |
| title | In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers |
| title_full | In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers |
| title_fullStr | In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers |
| title_full_unstemmed | In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers |
| title_short | In-Depth Experimental Analysis of Influence of Electroplated Gold Thickness on Thermal and Electro-Optical Properties of mid-IR AlInAs/InGaAs/InP Quantum Cascade Lasers |
| title_sort | in depth experimental analysis of influence of electroplated gold thickness on thermal and electro optical properties of mid ir alinas ingaas inp quantum cascade lasers |
| topic | quantum cascade lasers thermoreflectance Raman spectroscopy gold electroplating |
| url | https://www.mdpi.com/1996-1944/14/23/7352 |
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