法国Thomson－CSF中心实验室的科学家们新近展示了他们研制的世界上第一台单极注入砷化镓异质结激光器，又称量子级联（QC）激光器．该项研究是与瑞士Neuchatel大学等单位合作完成的，同时也是欧洲开发单极半导体激光器的Brite／EURAM计划的一部分．量子级联激光器的工作原理如 Scientists at the Thomson-CSF Central Laboratory in France have recently demonstrated the world’s first unipolar implanted GaAs heterojunction laser, also known as a quantum cascade (QC) laser. The study was completed in collaboration with a unit such as Neuchatel University in Switzerland and is part of the Brite / EURAM program to develop unipolar semiconductor lasers in Europe. Quantum cascade laser works as