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
| Autor: | Aleksandr Kuźmicz, Krzysztof Piskorski, Katarzyna Krajewska, Grzegorz Sobczak, Kamil Pierściński, Dorota Pierścińska, Krzysztof Chmielewski, Piotr Gutowski |
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| Rok vydání: | 2021 |
| Předmět: |
Cladding (metalworking)
Technology Materials science Article law.invention symbols.namesake law Thermal General Materials Science gold electroplating Electroplating quantum cascade lasers thermoreflectance Raman spectroscopy Microscopy QC120-168.85 business.industry QH201-278.5 Engineering (General). Civil engineering (General) Critical value Laser TK1-9971 Characterization (materials science) Descriptive and experimental mechanics Cascade symbols Optoelectronics Electrical engineering. Electronics. Nuclear engineering TA1-2040 business |
| Zdroj: | Materials Materials, Vol 14, Iss 7352, p 7352 (2021) Materials; Volume 14; Issue 23; Pages: 7352 |
| ISSN: | 1996-1944 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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