期刊
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
卷 15, 期 2, 页码 385-392出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2008.2010412
关键词
Optical fiber lasers; optical parametric oscillators (OPOs); periodically poled magnesium-oxide-doped lithium niobate (PPMgLN); pulsed lasers
资金
- Natural Science Foundation of China [60778001]
- Program for Nevada's Center for Entrepreneurship and Technology (NCET) in University
- National Basic Research Program (973) of China [2007CB307003]
- EPSRC [EP/E057292/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E057292/1] Funding Source: researchfish
We report a periodically poled magnesium-oxide-doped lithium niobate (PPMgLN) based optical parametric oscillator (OPO) pumped by a diode-seeded, linearly polarized, high-power, pulsed, ytterbium fiber master oscillator power amplifier (MOPA). Using adaptive pulse shaping of the seed laser (using an external modulator), we demonstrate a reduction in the impact of dynamic gain saturation and optical Kerr/Raman nonlinearities within the fiber MOPA, obtaining shaped signal and idler pulses at the OPO output and reduced spectral bandwidths. A maximum average output power of 26.5 W was obtained from the MOPA at 1062 run. An output power as high as 11 W from the OPO at an overall slope efficiency of 67% was achieved, with 2.7 W of output power obtained at a wavelength of 3.5 mu m. Our experiments were pump-power-limited and considerable scope remains for further power scaling of such OPOs using this approach.
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