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首页> 外文期刊>Optics Letters >Molecular-alignment-assisted high-energy supercontinuum pulse generation in air
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Molecular-alignment-assisted high-energy supercontinuum pulse generation in air

机译:分子取向辅助的高能超连续谱脉冲在空气中的产生

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摘要

We demonstrate controllable generation of a high-energy supercontinuum pulse of 1.8 mJ through femtosecond filamentation in prealigned diatomic molecules in air. For high-energy femtosecond laser pulses of linear polarization, the focusing condition is loosened by the cross-defocusing effect from the perpendicularly orientated molecules, which promotes the high-energy supercontinuum generation with suppressed multifilamentation and decreased multiphoton ionization loss due to the reduced ionization probability.
机译:我们证明了通过飞秒丝化在空气中预先排列的双原子分子中可控制的1.8 mJ高能超连续谱脉冲的产生。对于线性偏振的高能飞秒激光脉冲,由于垂直取向分子的交叉散焦效应而使聚焦条件松散,从而促进了高能超连续谱的产生,并抑制了复丝化,并由于降低了电离几率而降低了多光子电离损失。

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