自由耦合输出的大模场面积光子晶体光纤锁模激光器
An Yb-doped large-mode-area photonic crystal fiber mode-locking laser with free output coupler
摘要
Abstract
The theoretical and experimental study of an Yb-doped double clad large mode area photonic crystal fiber laser is reported. This fiber laser system uses one facet of the fiber directly as a cavity mirror, which is fine-polished to of angle after collapsing. Lasing is obtained with the feedback of this facet, and mode-locking is achieved by using a semiconductor saturable absorber as another cavity mirror and adding a grating-pair as the spectral filter. By adjusting the filtering conditions, continuous tuning from wide filtering condition to narrow filtering condition is achieved. Under the wide filtering condition, the system generates femtosecond pulses, the highest average power of which is 2.2 W, corresponding to 29.3 nJ pulse energy and 367 fs pulse duration; under the narrow filtering condition, it generates picosecond pulses, the highest average power of which is 4 W, corresponding to 53.3 nJ pulse energy and 1.14 ps pulse duration. In numerical simulation, the evolution and cavity-position-related characteristics of pulses are studied by using split-step Fourier method.关键词
飞秒激光/光纤激光器/光子晶体光纤/大模场面积光纤Key words
femtoseeond laser/fiber laser/photonic crystal fiber/large-mode-area fiber分类
数理科学引用本文复制引用
张驰,胡明列,宋有建,张鑫,柴路,王清月..自由耦合输出的大模场面积光子晶体光纤锁模激光器[J].物理学报,2009,58(11):7727-7734,8.基金项目
国家重点基础研究发展计划(批准号:2006CB806002,2010CB327604),国家高技术研究发展计划(批准号:2007AA03Z447).国家自然科学基金(批准号:60678012和60838004),高等学校博士学科点专项科研基金(批准号:20070056083,20070056073),教育部科学技术研究重点项目(批准号:108032),全国博士学位论文作者专项资金项目(批准号:2007834),教育部新世纪优秀人才支持计划(批准号:NCET-07-0597)资助的课题.Project supported by the National Basic Research Program of China (Grant Nos. 2006CB806002 and 2010CB327604), the National High Technology Research and Development Program of China (Grant No. 2007AA03Z447), the National Natural Science Foundation of China (Grant Nos. 60678012 and 60838004), the Doctoral Program Foundation of Institution of Higher Education of China (Grant Nag. 20070056083 and 20070056073), the Key Project of Chinese Ministry of Education. (Grant No. 108032), FANEDD(Grant No. 2007B34), and NCET(Grant No. NCET-07-0597). （批准号:2006CB806002,2010CB327604）
