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Broadband mid-infrared pulse generation in GaSe with an Yb:KGW laser-based dual OPA setup

机译:具有YB的Gase中的宽带中红外脉冲产生:基于KGW激光的双OPA设置

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We present a simple technique for generating broadly tunable, broadband pulses in the mid-infrared. The method is based on mixing ~30fs pulses at 1.8μm with narrowband pulses tuned through 2.5-4.5μm in GaSe crystal. Output pulses with bandwidths of 240-730cm~(-1), durations down to 31fs, good pulse quality, and nearly-Gaussian spatial modes are produced in the 3-6μm range with ~10% conversion efficiency from 1.8μm pump pulses to mid-infrared output (at 3-4μm). The scheme could be readily adapted to a wide variety of Yb-doped lasers already present in many research labs.
机译:我们提出了一种在中红外线产生广泛调谐的宽带脉冲的简单技术。 该方法基于1.8μm的混合〜30fs脉冲,窄带脉冲通过Gase晶体中的2.5-4.5μm调谐。 带宽为240-730厘米〜(-1)的输出脉冲,持续到31FS,良好的脉冲质量和近高斯空间模式,在3-6μm范围内产生,从1.8μm泵脉冲到中间的转换效率约为10% -Infared输出(3-4μm)。 该方案可以容易地适应已经存在于许多研究实验室中的各种各样的YB掺杂激光器。

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