首页 | 本学科首页   官方微博 | 高级检索  
     检索      


External-cavity beam combining of 4-channel quantum cascade lasers
Institution:1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No.3888, Nanhu Road, Changchun 130033, China;2. Key Lab for Reliability Physics and Application Technology of Electrical Component, No.58, Dongguanzhuang Road, Guangzhou 510610, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;1. Institute of Applied Electronics, CAEP, 621999, China;2. The Key Laboratory of Science and Technology on High Energy Laser, CAEP, Mianyang Sichuan 621999, China;1. Neutron Physics Department, P.N. Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia;2. Vac&Las Laboratory, Tbilisi, Georgia;3. N.G. Basov Quantum RadioPhysics Division, P.N. Lebedev Physical Institute of Russian Academy of Sciences, Moscow, Russia;1. Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China;2. School of Physical Science and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;3. School of Electrical and Electronic Engineering, Nanyang Technological University, 639798 Singapore;1. Laboratory of All-solid-state Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;3. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101407, China;4. Beijing Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing, Beijing 100083, China
Abstract:We demonstrate an external-cavity (EC) beam combining of 4-channel quantum cascade lasers (QCLs) with an output coupler which makes different QCL beams propagating coaxially. A beam combining efficiency of 35% (up to 75% near threshold) is obtained with a beam quality M2 of 5.5. A peak power of 0.64 W is achieved at a wavelength of 4.7 μm. The differences of spot characteristic between coupled and uncoupled are also showed in this letter. The QCLs in this EC system do not have heat crosstalk so that the system can be used for high power beam combining of QCLs.
Keywords:Quantum cascade laser  Beam combining  External-cavity
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号