Schmidt O, Wirth C, Nodop D, Limpert J, Schreiber T, Peschel T, Eberhardt R, Tünnermann A
Friedrich-Schiller University, Institute of Applied Physics, Albert-Einstein-Str. 15, 07745 Jena, Germany.
Opt Express. 2009 Dec 7;17(25):22974-82. doi: 10.1364/OE.17.022974.
In this paper we introduce a simple scheme to spectrally combine four single beams using three low-cost dielectric interference filters as combining elements. 25 ns pulses from four independent and actively Q-switched fiber seed-sources are amplified in a single stage fiber-amplifier. Temporally and spatially combined 208 W of average power and 6.3 mJ of pulse energy are obtained at two different repetition frequencies. A detailed analysis of beam quality as well as the thermal behavior of the combining elements is carried out and reveals mutual dependency.
在本文中，我们介绍了一种简单的方案，使用三个低成本介质干涉滤光片作为组合元件，对四束单光束进行光谱组合。来自四个独立且主动调Q光纤种子源的25纳秒脉冲在单级光纤放大器中被放大。在两个不同的重复频率下，获得了时间和空间上组合的208瓦平均功率和6.3毫焦脉冲能量。对光束质量以及组合元件的热行为进行了详细分析，结果显示了它们之间的相互依赖性。
