N2-CO 混合气体产生的椭圆极化高阶谐波

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2024-10-05 DOI:10.1016/j.optcom.2024.131183

Tianxin Ou , Feng Wang , Hua Yuan , Chunhui Yang , Jiahang Song , Qing Liao

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引用次数: 0

摘要

我们从理论上研究了 N2-CO 混合气体产生的椭圆极化高次谐波。我们的模拟结果表明，高次谐波的极化对混合比和分子排列角都非常敏感。特别是，与纯净的 N2 气体相比，即使添加少量 CO 气体也会显著增强谐波椭圆度。在适当的混合比和分子排列角条件下，可以观察到较大的 HHG 椭圆度，比报道的 N2-Ar 混合气体的椭圆度更大。此外，在考虑分子排列效应时，HHG 的椭圆度与混合比的关系也略有变化。这些发现为产生椭圆极化极紫外脉冲铺平了道路。

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Elliptically polarized high-order harmonic generation from N2-CO mixed gases

We theoretically study the elliptically polarized high-order harmonic generation from N

_{2}

-CO mixed gases. Our simulations show that the polarization of HHG is highly sensitive to both the mixing ratio and molecular alignment angle. In particular, even a small addition of CO gas results in a significant enhancement of harmonic ellipticity compared to pure N

_{2}

gas. Under a proper mixing ratio and molecular alignment angle, a large ellipticity of HHG is observed, which is larger than that in reported N

_{2}

-Ar mixture. Furthermore, when considering the molecular alignment effect, the dependence of ellipticity of HHG on mixing ratio exhibits slight variations. These findings pave the way for generating elliptically polarized extreme ultraviolet pulses.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.