摘要
为了探究850 nm垂直腔面发射激光器(Vertical-Cavity Surface-Emitting Laser,VCSEL)在空间辐射环境中的退化规律与机理,开展了3 MeV和10 MeV质子辐照实验,获得了光输出功率和阈值电流等参数随质子注量的退化规律,同时发现光输出功率和阈值电流在相同位移损伤剂量(Displacement Damage Dose,DDD)下的退化程度基本一致。在实验的基础上使用Silvaco软件进行建模与仿真计算,结果与实验结果具有较高一致性,在仿真模型中提取了陷阱密度、施主与受主电离密度、镜面损失、辐射复合速率和光子数等微观参数,在实验规律基础上深入探究了参数退化规律与辐射损伤机制。仿真结果发现这些微观参数随质子注量增加均有不同程度的变化。该结果对于进一步深入理解VCSEL退化机制具有重要意义的参考价值。
[Background]Vertical cavity surface emitting lasers(VCSEL)have very high application value in space radiation environment.[Purpose]This study aims to explore the degradation rule and mechanism of 850 nm VCSEL in harsh radiation environment.[Methods]First of all,the MULASSIS tool was employed to calculate displacement damage dose(DDD)and design experimental scheme for 850 nm multimode VCSEL samples.Then,3 MeV and 10 MeV proton irradiation experiments were conducted to obtain the degradation rule of parameters such as light output power and threshold current with the proton fluence,and to find that the degradation degree of light output power and threshold current were equal under the same DDD.Finally,the Silvaco software was used for modeling and simulation on an experimental basis to extract microscopic parameters such as trap density,donor and acceptor ionization density,mirror loss,radiation recombination rate and photon number.[Results]The simulation results are in good agreement with the experimental results,these results show that each parameter changes to different degrees with the increase of proton fluence.[Conclusions]The parameter degradation law and radiation damage mechanism of VCSEL can be deeply explored by simulation on the basis of the experimental law,and simulation results are of great significance for understanding the degradation mechanism of VCSEL.
作者
陈加伟
李豫东
玛丽娅·黑尼
郭旗
刘希言
CHEN Jiawei;LI Yudong;MALIYA·Heini;GUO Qi;LIU Xiyan(Key Laboratory of Functional Materials and Device for Special Environments,Xinjiang Technical Institute of Physics&Chemical,Chinese Academy of Sciences,Urumqi 830011,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Precision Instrument and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China)
出处
《核技术》
CAS
CSCD
北大核心
2022年第11期31-36,共6页
Nuclear Techniques
基金
国家自然科学基金(No.61534008)
新疆电子信息材料与器件重点实验室资助项目(No.2021D04012)资助。
