论文标题
空心毛细管纤维中的宽带圆形极化深脉冲脉冲
Generation of broadband circularly polarized deep-ultraviolet pulses in hollow capillary fibers
论文作者
论文摘要
我们展示了一种有效的方案，可以通过在拉伸气体填充的空心毛细管纤维中通过种子的脱位四波混合在深紫外线中在深紫外线中产生高能，极化的飞秒激光脉冲。分别以400 nm和800 nm为中心的圆极化的35 FS脉冲泵送和播种，我们生成以266 nm为中心的怠速脉冲，具有超过25 microjoule的能量和超过95％的光谱平均椭圆度。甚至可以以降低椭圆度的成本来获得更高的惰性能量和宽光谱（27 nm带宽）。我们的系统可以平均功率缩放，并在不同的光谱区域（包括真空紫外线）中使用。
We demonstrate an efficient scheme for the generation of broadband, high-energy, circularly polarized femtosecond laser pulses in the deep ultraviolet through seeded degenerate four-wave mixing in stretched gas-filled hollow capillary fibers. Pumping and seeding with circularly polarized 35 fs pulses centered at 400 nm and 800 nm, respectively, we generate idler pulses centered at 266 nm with more than 25 microjoule of energy and over 95% spectrally averaged ellipticity. Even higher idler energies and broad spectra (27 nm bandwidth) can be obtained at the cost of reduced ellipticity. Our system can be scaled in average power and used in different spectral regions, including the vacuum ultraviolet.
