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Generation of axially modulated plasma waveguides using a spatial light modulator

机译:使用空间光调制器生成轴向调制等离子体波导

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We demonstrate the generation of axially modulated plasma waveguides using spatially patterned high-energy laser pulses. A spatial light modulator (SLM) imposes transverse phase front modulations on a low-energy (10 mJ) laser pulse which is interferometrically combined with a high-energy (130-450 mJ) pulse, sculpting its intensity profile. This enables dynamic and programmable shaping of the laser profile limited only by the resolution of the SLM and the intensity ratio of the two pulses. The plasma density profile formed by focusing the patterned pulse with an axicon lens is likewise dynamic and programmable. Centimeter-scale, axially modulated plasmas of varying shape and periodicity are demonstrated. (C) 2016 Optical Society of America
机译:我们演示了使用空间图案化的高能激光脉冲产生的轴向调制等离子体波导。空间光调制器(SLM)对低能(10 mJ)激光脉冲施加横向相位前调制,该脉冲通过干涉方式与高能(130-450 mJ)脉冲干涉,从而雕刻出其强度轮廓。这样就可以对激光轮廓进行动态和可编程的整形,该整形仅受SLM的分辨率和两个脉冲的强度比的限制。通过用轴锥透镜聚焦图案化的脉冲而形成的等离子体密度分布同样是动态且可编程的。证明了厘米级的形状和周期性变化的轴向调制等离子体。 (C)2016美国眼镜学会

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