高平均功率和高光束质量激光在民用及军事领域都有重要的应用,是当前激光技术领域的研究热点之一。全固态激光器、光纤激光器等都可以达到一定高的功率,但也有各自的缺点。考虑到现有激光技术的发展现状,国防科技大学刘泽金教授等创造性地提出了新体系结构固态激光的概念,以获取高光束质量的高功率激光。近期本刊编辑对国防科技大学新体系结构固态激光实验室学术带头人刘泽金教授进行了专访。(左图为6路光纤放大器相干合成,总输出功率73.5W时的合成光斑图样) High average power and high beam quality laser in civil and military applications have important applications, is currently one of the hot areas of laser technology. All-solid-state lasers, fiber lasers, etc. can achieve a certain high power, but also have their own shortcomings. Taking into account the current status of the development of laser technology, Professor Liu Zejin, National University of Defense Technology creatively proposed the concept of a new architecture of solid-state lasers to obtain high-power laser beam with high beam quality. Recently our editors conducted an interview with Professor Liu Zejin, the academic leader of the new architecture solid-state laser lab in National University of Defense Technology. (The left picture shows the synthesis spot pattern of the 6-channel optical fiber amplifier when the total output power is 73.5W)