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首页> 外文期刊>Optics Letters >Direct amplification of a nanosecond laser diode in a high gain diode-pumped Nd:YVO_4 amplifier
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Direct amplification of a nanosecond laser diode in a high gain diode-pumped Nd:YVO_4 amplifier

机译:在高增益二极管泵浦Nd:YVO_4放大器中直接放大纳秒级激光二极管

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摘要

We demonstrate that Nd:YVO_4 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 μm, 0.22 NA) and a low Nd-doped (0.2%) temperature controlled Nd:YVO_4 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 μJ.
机译:我们证明Nd:YVO_4可以以非常简单的双通道配置有效地放大纳秒激光二极管。基于808 nm(60 W,100μm,0.22 NA)的高亮度光纤耦合激光二极管和低Nd掺杂(0.2%)温度控制的Nd:YVO_4的纵向泵浦,我们获得了62 dB的光学增益,非常低的(<2%)寄生激光发射和10 W的平均输出功率。在15 kHz时,我们观察到很强的增益饱和动态,从而使脉冲持续时间从100 ns降低到3.5 ns。此效果以620μJ的能量将峰值功率提高了18倍(130 kW)。

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