Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1537874 | Optics Communications | 2011 | 5 Pages |
Abstract
The frequency doubling of femtosecond pulses from an Yb-doped fiber laser source was demonstrated in a PPKTP waveguide fabricated by femtosecond laser direct writing. The PPKTP waveguide contains a fixed period of 8.9 μm and the feomtosecond fundamental pulses have a central wavelength of 1044 nm. A maximum SHG power of 406 mW was produced, yielding a conversion efficiency of 5.6%. Numerical simulations were carried out to investigate the property of frequency doubling for femtosecond pulses. The results show that the SHG process proceeds even the quasi-phase-matching (QPM) condition is not well satisfied, which is significantly different from that of “long” pulses or CW light and is accorded with the experimental results.
Related Topics
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Authors
Chenghou Tu, Zhangchao Huang, Shuanggen Zhang, Minglie Hu, Qingyue Wang, Enbang Li, Yongnan Li, Fuyun Lu,