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

• 来源期刊: 中国物理B（英文版）
• 关键词: VCSEL array mesa arrangement optimization thermal stability
• 年，卷（期）: 2017,（6）
• 页码范围: 157-164
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/6/064204

摘要

The thermal stability of a vertical-cavity surface-emitting laser (VCSEL) array is enhanced by redesigning the mesa arrangement.Based on a thermoelectric coupling three-dimensional (3D) finite-element model,an optimized VCSEL array is designed.The effects of this optimization are studied experimentally.Power density characteristics of VCSEL arrays with different mesa configuration are obtained under different thermal stress in which the optimized device shows improved performance.Optimized device also shows better stability from measured spectra and calculated thermal resistances.The experimental results prove that our simulation model and optimization is instructive for VCSEL array design.