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Second-harmonic generation using a high-energy and tunable Q-switched multicore fiber laser

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3 Author(s)
Yanming Huo ; PC Photonics Corp, Waterford, CT, USA ; King, G.G. ; Cheo, Peter K.

We demonstrate second-harmonic generation using a high-energy and tunable Q-switched Yb-doped seven-core fiber laser. The laser is tuned by incorporating a diffraction grating in the cavity, and is tunable over a range of about 40 nm with peak energy of more than 0.34 mJ at pulse repetition rate of 5 kHz. A conversion efficiency of about 7% is achieved using a 4×4×9 mm KTP crystal. Due to the tunability of the laser, a temperature-controlling oven is not needed for phase matching.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 10 )