摘要
1960年发明的固态激光器和气体激光器,1962年发明的双极型半导体激光器和1994年发明的单极型量子级联激光器(QCL)是激光领域的三个重大革命性里程碑。自1994年发明单极型QCL以来,目前已研制出波长覆盖2.63～360μm,室温连续功率达瓦级的系列中远红外波段单极型QCL。本文对QCL的发明、激射机制、材料与激光器进行了综述性介绍。讨论了QCL及其在环境与气候监测、医学成像和检查及疾病诊断、通信、国土安全等战略新兴应用领域的研究现状和未来发展趋势。
There are three major revolutionary milestones in the laser field： the invention of solid-state lasers and gas-state lasers in 1960,the invention of bipolar semiconductor lasers in 1962,and the invention of unipolar quantum cascade lasers（QCLs） in 1994.Currently,mid-and far-infrared unipolar QCLs cover 2.63～360 μm wavelength,continuous wave operation at room temperature with power up to watts.This paper gives an overview on the invention of the QCL and research progress in its theory,materials and devices.The article also discusses the current research status and the future development of QCLs and their applications in emerging strategic areas,including environment and climate monitoring,medical imaging and testing for disease diagnosis,communications,and homeland security.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2010年第9期2213-2220,共8页
Chinese Journal of Lasers
关键词
半导体激光
量子级联激光器
分子束外延
中远红外
semiconductor lasers
quantum cascade lasers
molecular beam epitaxy
mid-and far-infrared
