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Chin. Phys. B, 2016, Vol. 25(1): 014207    DOI: 10.1088/1674-1056/25/1/014207
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

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

Wen-Long Tian(田文龙)1, Zhao-Hua Wang(王兆华)2, Jiang-Feng Zhu(朱江峰)1, Zhi-Yi Wei(魏志义)2
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
Abstract  

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 μ in steps of 0.5 μ and 19.5-21.3 μ in steps of 0.2 μ 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.

Keywords:  femtosecond optical parametric oscillator      intracavity second harmonic generation      periodically-poled lithium niobate      Yb:LYSO solid-state laser  
Received:  27 June 2015      Revised:  21 September 2015      Accepted manuscript online: 
PACS:  42.65.Yj (Optical parametric oscillators and amplifiers)  
  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.72.Ai (Infrared sources)  
Fund: 

Project 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), and the Key Deployment Project of Chinese Academy of Sciences (Grant No. KJZD-EW-L11-03).

Corresponding Authors:  Zhao-Hua Wang, Zhi-Yi Wei     E-mail:  zhwang@iphy.ac.cn;zywei@iphy.ac.cn

Cite this article: 

Wen-Long Tian(田文龙), Zhao-Hua Wang(王兆华), Jiang-Feng Zhu(朱江峰), Zhi-Yi Wei(魏志义) Tunable femtosecond near-infrared source based on a Yb:LYSO-laser-pumped optical parametric oscillator 2016 Chin. Phys. B 25 014207

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