75-femtosecond all-fiber ultrashort pulse laser  

作　　者：DENG DingHuan ZHAN Li XIA YuXing 

机构地区：[1]Institute of Optics and Photonics, Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Chinese Science Bulletin》2008年第13期1937-1940,共4页

基　　金：the National Natural Science Foundation of China (Grant No. 60577048);the Science and Technology Committee of Shanghai Municipal (Grant No. 04DZ14001)

摘　　要：We report the direct generation of 75-femosecond pulses from a stretched-pulse fiber ring laser using the nonlinear polarization rotation mode-locking mechanism. As the gain media in the laser,the high-doped erbium-doped fiber working at positive dispersion was used to compensate the negative dispersion of standard single mode fiber. Under a 125 mW pump power,the average output power was higher than 15 mW,with a 25.9 MHz repetition rate and 53 nm spectrum width. Meanwhile,the pulse energy was greatly improved,which could reach 0.6 nJ. The laser easily achieved mode-locking and ran stably at room temperature. All-fiber construction makes it compactable and portable.We report the direct generation of 75-femosecond pulses from a stretched-pulse fiber ring laser using the nonlinear polarization rotation mode-locking mechanism. As the gain media in the laser, the high-doped erbium-doped fiber working at positive dispersion was used to compensate the negative dispersion of standard single mode fiber. Under a 125 mW pump power, the average output power was higher than 15 mW, with a 25.9 MHz repetition rate and 53 nm spectrum width. Meanwhile, the pulse energy was greatly improved, which could reach 0.6 nJ. The laser easily achieved mode-locking and ran stably at room temperature. All-flber construction makes It compactable and portable.

关 键 词：铒激光 纤维杂质 非线性极化旋转 脉冲 

分 类 号：O437[机械工程—光学工程]