基于振动弛豫理论提高光抽运太赫兹激光器输出功率的研究
Improvement of the output p ower of optical pumping THz lasers based on the theory of vibrational relaxation
摘要
Abstract
Based on the semiclassical density matrix theory and vibrational relaxation theory, the present paper studies the influences on optical pumping THz lasers output power due to adding an appropriate proportion of buffer gas and appropriately reducing the waveguide core diameter. Results prove that adding appropriate proportion of buffer gas or appropriately reducing the waveguide core diameter can increase the output of light intensity of THz laser. Optimizing the two parameters at the same time can further improve the efficiency of pumping laser energy into THz laser energy, extend the effective activation area of the working cavity, put off the appearance of the pumping saturation effect, and increase the output power of the THz lasers. This research may have a guiding significance for the THz optical pumping laser in improving energy conversion efficiency, and increasing the output power so as to bring about the miniaturization of THz optical pumping laser.关键词
太赫兹/振动瓶颈效应/缓冲气体/芯径Key words
terahertz (THz)/vibrational bottleneck effect/buffer gas/core diameter引用本文复制引用
张会云,刘蒙,张玉萍,何志红,申端龙,吴志心,尹贻恒,李德华..基于振动弛豫理论提高光抽运太赫兹激光器输出功率的研究[J].物理学报,2014,(1):010702-1-010702-7,7.基金项目
国家自然科学基金(批准号:61001018)、山东省自然科学基金(批准号：ZR2011FM009, ZR2012FM011)、山东科技大学杰出青年科学基金(批准号:2010KYJQ103)、山东科技大学科研创新团队支持计划项目(批准号:2012KYTD103)、山东省高等学校科技计划项目(批准号：J11LG20)资助,青岛市科技计划项目(批准号:11-2-4-4-(8)-jch)、青岛经济技术开发区重点科技计划项目(批准号:2013-1-64)和山东科技大学科技创新基金(批准号：YCB120173)资助的课题.@@@@Project supported by the National Natural Science Foundation of China (Grant No.61001018), the Natural Science Founda-tion of Shandong Province, China (Grant Nos. ZR2011FM009, ZR2012FM011), the Research Fund of Shandong University of Science and Technology (SDUST), China (Grant No.2010KYJQ103), the SDUST Research Fund (Grant No.2012KYT-D103), the Shandong Province Higher Educational Science and Technology Program, China (Grant No. J11LG20), the Qingdao Science & Technology Project, China (Grant No.11-2-4-4-(8)-jch), the Qingdao Economic & Technical Devel-opment Zone Science & Technology Project, China (Grant No.2013-1-64), and the Shandong University of Science and Technology Foundation, China (Grant No. YCB120173) （批准号:61001018）
