期刊
OPTICS LETTERS
卷 39, 期 4, 页码 997-1000出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.000997
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- DGA
- OSEO
- Conseil Regional d'Ile de France
We demonstrate that Nd:YVO4 can efficiently amplify a nanosecond laser diode in a very simple double-pass configuration. Based on longitudinal pumping with a high brightness fiber-coupled laser diode at 808 nm (60 W, 100 mu m, 0.22 NA) and a low Nd-doped (0.2%) temperature controlled Nd:YVO4 we achieved an optical gain of 62 dB with very low (<2%) parasitic laser emission and an average output power of 10 W. At 15 kHz, we observed a strong gain saturation dynamic resulting in a pulse duration reduction from 100 to 3.5 ns. This effect enhances the peak power by a factor of 18 (130 kW) with an energy of 620 mu J. (C) 2014 Optical Society of America
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