Abstract
AlxGa1−xAs is a main epitaxial material of 850-nm VCSEL. In order to analyze lattice match and heat production, the band gap of AlxGa1−xAs was built, using the first-principles calculation theory. In addition, based on thermoelectric coupling three-dimensional (3D) finite element method, details on the surface temperature distributions of different 850-nm VCSEL arrays were analyzed. Array spacing and array form have an effect on heat dissipation of VCSEL arrays. The diamond array with 18 light emitting units shows the best thermal stability among others.
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Acknowledgements
This work was supported in part by the National Natural Science Foundation (Grant Nos. 61505003, 61674140), National Key Research and Development Program of China (Grant Nos. 2016YFB0402502, 2017YFF0104803 and 2017YFB0305800), and Beijing education commission project (SQKM201610005008).
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Wang, C., Li, C., Dai, J. et al. Thermal analysis of VCSEL arrays based on first principle theory and finite element method. Opt Quant Electron 51, 196 (2019). https://doi.org/10.1007/s11082-019-1909-6
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DOI: https://doi.org/10.1007/s11082-019-1909-6