多工作模式下的非温控式半导体激光驱动器设计  

Design of Non-Temperature-Controlled Semiconductor Laser Driver in Multi-Mode Operation

作　　者：李金一 王华睿 Li Jinyi;Wang Huarui(JSNU SPBPU Institute of Engineering&SINORUSSIAN Institute,Jiangsu Normal University,Xuzhou 221000,Jiangsu,China;School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou 221000,Jiangsu,China)

机构地区：[1]江苏师范大学江苏圣理工学院-中俄学院,江苏徐州221000 [2]江苏师范大学物理与电子工程学院,江苏徐州221000

出　　处：《应用激光》2023年第8期159-169,共11页Applied Laser

基　　金：江苏师范大学大学生校级创新训练项目(XSJCX13062)。

摘　　要：半导体激光器作为一种新型的光源,已经广泛地应用于通信、军事和医疗等领域。在不同领域下,半导体激光器或工作于恒电流模式,或工作于恒功率模式,或工作于直流模式,或工作于交流模式。介绍一种多工作模式下非温控式半导体激光驱动器,可以在不同工作模式下自由切换。在恒电流模式下,现场可编程门阵列(FPGA)可以线性地调节半导体激光器驱动电流,趋势曲线拟合优度为0.999 77,线性度优越;还可以调制驱动电流产生正弦波、方波和三角波,产生波形频率的相对误差控制在10-5数量级;在恒功率模式下,无论是直流还是交流输出,均可以稳定激光输出功率。在长时间测试下,激光器直流输出时,输出功率相对标准偏差为0.209%,激光器交流输出时,输出功率相对标准偏差为0.275%。所有操作均可通过上位机界面进行无线控制,最大程度地提高了易用性和灵活性。As a new type of light source,semiconductor lasers have been widely used in communications,military,and medical fields.In different fields,semiconductor lasers either operate in constant current mode,or work in constant power mode,or work in DC mode,or work in AC mode.This article describes a non-temperature-controlled semiconductor laser driver in multi-mode operation,which can operate in different modes and can be switched freely.In constant current mode,FPGA can linearly adjust the driver current of semiconductor laser,and the goodness of fit of trend line is 0.99977,which has excellent linearity.This current can also be modulated to generate sine waves,square waves,and triangle waves.The relative error of the generated waveform frequency is controlled in the order of 1o-5 magnitude;In constant power mode,the FPGA can stabilize the laser output power in both DC and AC conditions.Under long-term testing,the relative standard deviation of output power is 0.209%when the laser is driven by DC and 0.275%when the laser is driven by AC.All operations can be controlled wirelessly via the host computer interface,maximizing ease of use and flexibility.

关 键 词：半导体激光驱动器 现场可编程门阵列 非温控式 多工作模式 

分 类 号：TN248.4[电子电信—物理电子学]