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) Coupling lines (red solid lines) which indicate the existence of heat coupling between mesas in (a) normal VCSEL array and (b) optimized VCSEL array. The green solid–dashed line in panel (b) represents the max mesa distance ( ) that can be counted as a coupling line. CN: coupling number.