Enhanced thermal stability of VCSEL array by thermoelectric analysis-based optimization of mesas distribution*

Project supported by the National Natural Science Foundation of China (Grant Nos. 61434005, 61474118, 61376070, 11404326, and 11674314), the Jilin Provincial Scientific and Technological Development Program, China (Grant No. 20150203011GX), the Changchun Science and Technology Project, Jilin Province, China (Grant No. 15SS02), and the Youth Innovation Promotion Association, Chinese Academy of Sciences (Grant No. 2017260).

Zhong Chu-Yu1, 2, Zhang Xing1, †, Liu Di3, Ning Yong-Qiang1, Wang Li-Jun1
       

(color online) Surface temperature distribution of 4×4 VCSEL arrays with different mesa edge distances d: (a) d = 50 μm; (b) d = 100 μm; (c) d = 150 μm; (d) d = 200 μm. The maximum temperature for each design is 372.0294 K, 359.5966 K, 352.8352 K, and 348.9016 K respectively.