激光技术Issue(3)：316-319,4.DOI:10.7510/jgjs.issn.1001-3806.2015.03.007
可调谐半导体激光器的精密控制系统设计
Design of precision control systems for tunable semiconductor lasers
曹延昌 1熊继军 1侯庆志1
作者信息
- 1. 中北大学电子测试技术国家重点实验室，太原030051
- 折叠
摘要
Abstract
In order to meet the requirements of high stability of semiconductor laser in high precision measurement field, a semiconductor laser control system with high stability and low noise was proposed .The control system consists of a current driver and temperature controller .A negative feedback was used to maintain the current stability .A highly integrated MAX1978, as main control chip, was used to drive the thermoelectric cooler for temperature compensation .After the experiment verification , current was adjustable in the range of 200mA, current control accuracy was less than 1μA.The effective value of alternating current noise voltage within 3kHz ~100kHz bandwidth was less than 300nA and long-term temperature drift was less than 2m℃.The results show that the system can be used to drive distribibuted feedback external cavity LD lasers and distributed Bragg reflector LD lasers .关键词
光电子学/控制系统/高稳定度/低噪声Key words
optoelectronics/control system/high stability/low noise分类
信息技术与安全科学引用本文复制引用
曹延昌,熊继军,侯庆志..可调谐半导体激光器的精密控制系统设计[J].激光技术,2015,(3):316-319,4.
