Femtosecond 5-W Yb:KGW slab laser oscillator pumped by a single broad-area diode and its application as supercontinuum source
Femtosecond 5-W Yb:KGW slab laser oscillator pumped by a single broad-area diode and its application as supercontinuum source
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DOI：
10.1007/s00340-009-3421-3
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发表时间：
2009-03
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影响因子：
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通讯作者：
F. Hoos;T. Meyrath;S. Li;B. Braun;H. Giessen
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文献类型：
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作者：
F. Hoos;T. Meyrath;S. Li;B. Braun;H. Giessen
我们展示了一个新颖的和非常简单的设计，一个高效的高功率飞秒Yb：KGW板条激光振荡器。该激光器能够在44 MHz重复频率下产生大于5 W的输出功率和短至161 fs的脉冲宽度，具有接近衍射极限的光束和大于28%的光-光效率。该激光器由单个大面积激光二极管泵浦，并采用由三个透镜组成的简单泵浦光学器件。激光输出功率在两束之间分配，并讨论了单个或组合输出。与锥形光纤相结合，激光器被用来产生飞秒超连续谱，平均功率高达1.3 W，光谱范围从420 nm到1750 nm以上。
We demonstrate a novel and very simple design for an efficient high-power femtosecond Yb:KGW slab laser oscillator. The laser is capable of producing output powers of more than 5 W at 44-MHz repetition rate and pulse widths as short as 161 fs with a nearly diffraction limited beam and an optical-to-optical efficiency of more than 28%. The laser is pumped by a single broad-area laser diode and employs simple pump optics consisting of three lenses. The laser output power is distributed between two beams and single or combined outputs are discussed. In combination with a tapered fiber the laser was used to generate femtosecond supercontinua with up to 1.3-W average power and spectra spanning from 420 to over 1750 nm.