Title :
Second-harmonic generation to green using ultrafast fibre source and femtosecond written periodically poled waveguide
Author :
Zhang, Shaoting ; Yao, JingTao ; Liu, Wenxin ; Huang, Z. ; Lu, Feng
Author_Institution :
Tianjin Key Lab. of Film Electron. & Commun. Devices, Tianjin Univ. of Technol., Tianjin, China
fDate :
9/1/2010 12:00:00 AM
Abstract :
The rapid fabrication of a periodically poled waveguide in potassium titanyl phosphate crystal using tightly focused femtosecond laser pulses, and utilised for second-harmonic generation to the green by an all positive dispersion ytterbium-fibre laser-amplifier, is demonstrated. A maximum average SHG power of 104.4 mW was measured for the 10 mm-long waveguide under optimal singlemode propagation. A conversion efficiency of 47.4 can be achieved.
Keywords :
high-speed optical techniques; optical fabrication; optical fibre amplifiers; optical fibre dispersion; optical harmonic generation; optical waveguides; ytterbium; all positive dispersion; femtosecond laser pulses; femtosecond written periodically poled waveguide; fibre laser-amplifier; periodically poled waveguide rapid fabrication; potassium titanyl phosphate crystal; power 104.4 mW; second-harmonic generation; size 10 mm; ultrafast fibre source;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.0969
