Title :
Second-harmonic generation using a high-energy and tunable Q-switched multicore fiber laser
Author :
Huo, Yanming ; King, George G. ; Cheo, Peter K.
Author_Institution :
PC Photonics Corp, Waterford, CT, USA
Abstract :
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.
Keywords :
Q-switching; diffraction gratings; fibre lasers; laser cavity resonators; laser tuning; optical harmonic generation; optical materials; optical phase matching; potassium compounds; 5 kHz; KTP; KTP crystal; KTiOPO4; Q-switched fiber laser; diffraction grating; high-energy fiber laser; multicore fiber laser; phase matching; second-harmonic generation; tunable fiber laser; Diffraction; Fiber lasers; Laser feedback; Laser modes; Laser tuning; Multicore processing; Optical fiber polarization; Optical pulses; Pump lasers; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.833872
