摘要
为了使激光器电源具备驱动群量子级联激光器(QCL)的能力,研制了一种新型多支路QCL驱动电源。在硬件方面,该驱动电源采用时分复用控制技术,使各支路的驱动电流在时间上错开,达到互不影响的效果。在软件方面,对MOSFET传输特性数据进行分段拟合,提升了驱动电流线性度。实验结果表明,驱动电流线性度优于99.97%,长期稳定度优于4×10^-5。最后,利用该电源对4种不同波长的中红外QCL进行驱动试验,发光光谱正常,证明该驱动电源在实际应用中的可行性。
In order to make the power supply be capable of driving group quantum cascade lasers(QCL),a new multi-branch QCL driving power supply is developed.In terms of hardware,the driver power adopts time division multiplexing(TDM)control technology to make the drive current of each branch staggering in time,so as to achieve no effect among each branch and realize the driving of QCL group.In terms of software,piecewise fitting of MOSFET transmission characteristic data is used to improve the linearity of driving current.The experimental results show that the linearity of driving current is better than 99.97%,and the long-term stability is better than 4×10^-5.Finally,the driving test of mid-infrared QCL with four different wavelengths is carried out using the power supply.The luminescence spectrum is normal,proving the feasibility of the driving power supply in practical application.
作者
苑隆寅
马光明
YUAN Longyin;MA Guangming(Publishing and Media Department,Chongqing Business Vocational College,Chongqing 401331,China;School of Information and Communication Engineering,Beijing University of Technology,Beijing 100124,China)
出处
《电子器件》
CAS
北大核心
2020年第1期229-233,共5页
Chinese Journal of Electron Devices
基金
国家自然科学项目(U1204613)
北京市自然科学基金项目(11620145)
重庆市高等教育教学改革研究重点项目(192089)。
关键词
电子电路
QCL驱动电源
时分复用
多支路
分段拟合
electronic circuit
QCL drive circuit
time division multiplexing
multi branches
segmentation fitting
