基于石墨烯的1064nm连续锁模超短脉冲激光器  

1 064nm CW mode-locked ultrashort pulse laser based on graphene saturable absorber

作　　者：史瑞平[1,2,3] 白杨[1,2] 祁媚[1,2] 魏洪铎 任兆玉[1,2] 白晋涛[1,2,3] 

机构地区：[1]西北大学光子学与光子技术研究所,陕西西安710069 [2]陕西省光电技术与功能材料省部共建国家重点实验室培育基地国家级光电技术和功能材料及应用国际科技合作基地,陕西西安710069 [3]西北大学物理学系,陕西西安710069

出　　处：《应用光学》2014年第1期159-162,共4页Journal of Applied Optics

基　　金：国家自然科学基金(61205114);国家自然科学基金(61177059);陕西省科技统筹创新项目(2011KTCL01-06)

摘　　要：介绍了利用沉积在增透镜上的石墨烯薄膜作为可饱和吸收体、808nm激光二极管端面泵浦Nd∶YVO4晶体的1 064nm连续锁模激光输出特性。采用W型折叠谐振腔结构,在808nm泵浦功率为8.0 W时,有稳定的连续锁模脉冲输出,平均输出功率达到185mW;当抽运功率增加到16.0W时,获得了中心波长1 063.4nm、脉冲宽度为518fs、重复频率为66.7MHz、最大平均输出功率为323mW的百飞秒量级超短脉冲激光输出。实验结果表明:石墨烯具有优良的可饱和吸收性,在1 064nm波段能够实现高功率、百飞秒量级连续锁模脉冲激光输出。A I 064 nm continuous wave （CW） passively modelocked ultrashort pulse laser based on graphene saturable absorber was reported. The graphene film was deposited on an an tireflection lens, the Nd ：YVO4 crystal was pumped by 808 nm laser diode. On the basis of W folded cavity, the stable pulses of CW modelocked were obtained with the average output power of 185 mW when the pump power reached 8.0 W. When pump power reached 16.0 W, the 1 064 nm CW modelocked ultrashort laser with the average output power of 323 roW, the pulse width of 518 fs and the repetition rate of 66.7 MHz was obtained, which spectrum was centered at 1063.4 nm. Experiment results shows that graphene is an excellent saturable ab sorber for stable and reliable passively modelocked pulse generation around 1 064 nm wave length.

关 键 词：连续锁模 超短脉冲 石墨烯可饱和吸收体 全固态激光器 

分 类 号：TN219[电子电信—物理电子学]