Tunable femtosecond near-infrared source based on a Yb:LYSO-laser-pumped optical parametric oscillator  

作　　者：田文龙 王兆华 朱江峰 魏志义 

机构地区：[1]School of Physics and Optoelectronic Engineering,Xidian University,Xi'an 710071,China [2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics B》2016年第1期616-619,共4页中国物理B（英文版）

基　　金：supported by the National Key Basic Research Program of China(Grant No.2013CB922402);the National Key Scientific Instruments Development Program of China(Grant No.2012YQ120047);the National Natural Science Foundation of China(Grant Nos.61205130 and 11174361);the Key Deployment Project of Chinese Academy of Sciences(Grant No.KJZD-EW-L11-03)

摘　　要：We demonstrate a widely tunable near-infrared source from 767 nm to 874 nm generated by the intracavity second harmonic generation （SHG） in an optical parametric oscillator pumped by a Yb：LYSO solid-state laser. The home-made Yb：LYSO oscillator centered at 1035 nm delivers an average power of 2 W and a pulse duration as short as 351 fs. TWo MgO doped periodically poled lithium niobates （MgO：PPLN） with grating periods of 28.5-31.5 μm in steps of 0.5 μm and 19.5-21.3μm in steps of 0.2 μm are used for the OPO and intracavity SHG, respectively. The maximum average output power of 180 mW at 798 nm was obtained and the output pulses have pulse duration of 313 fs at 792 nm if a sech2-pulse shape was assumed. In addition, tunable signal femtosecond pulses from 1428 nm to 1763 nm are also realized with the maximum average power of 355 mW at 1628 nm.We demonstrate a widely tunable near-infrared source from 767 nm to 874 nm generated by the intracavity second harmonic generation （SHG） in an optical parametric oscillator pumped by a Yb：LYSO solid-state laser. The home-made Yb：LYSO oscillator centered at 1035 nm delivers an average power of 2 W and a pulse duration as short as 351 fs. TWo MgO doped periodically poled lithium niobates （MgO：PPLN） with grating periods of 28.5-31.5 μm in steps of 0.5 μm and 19.5-21.3μm in steps of 0.2 μm are used for the OPO and intracavity SHG, respectively. The maximum average output power of 180 mW at 798 nm was obtained and the output pulses have pulse duration of 313 fs at 792 nm if a sech2-pulse shape was assumed. In addition, tunable signal femtosecond pulses from 1428 nm to 1763 nm are also realized with the maximum average power of 355 mW at 1628 nm.

关 键 词：femtosecond optical parametric oscillator intracavity second harmonic generation periodically-poled lithium niobate Yb：LYSO solid-state laser 

分 类 号：TN753.2[电子电信—电路与系统]