利用双色驱动激光脉冲瞬时频率变化产生水窗隔离阿秒脉冲的理论预测。

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-02-01 DOI:10.1038/s41598-025-88665-2

Masoumeh Dehghanian, Mohammad Sabaeian, Siamak Noorizadeh

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引用次数: 0

摘要

本文报道了通过啁啾双色飞秒激光脉冲与氢原子相互作用，在水窗光谱区域内产生106阿秒孤立软x射线脉冲的理论。为了构建该脉冲，使用波长为800 nm，强度为[公式：见文]的啁啾3.5光周期（9.33 fs）激光脉冲作为主场。选取波长为1600 nm的37.32 fs激光脉冲作为控制场，脉冲强度为[公式：见文]，为主场强度的四分之一。用切向双曲函数对主场施加啁啾。本研究同时利用主场和控制场尽可能低的强度和尽可能高的脉冲持续时间，达到驱动场高次谐波产生的水窗频谱区域，最高达320次谐波。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse.

This work reports on the theoretical generation of isolated soft-X ray 106 attosecond pulse within the water window spectral region, through interacting a chirped two-color femtosecond laser pulse with a hydrogen atom. To construct this pulse, a chirped 3.5 optical cycle (9.33 fs) laser pulse with a wavelength of 800 nm and an intensity of [Formula: see text] is used as the main field. A 37.32 fs laser pulse with a wavelength of 1600 nm and intensity of [Formula: see text], one-quarter of the main field intensity, is employed as the control field. A tangential hyperbolic function is used to impose chirp on the main field. The study simultaneously utilizes the lowest possible intensity and the highest possible pulse duration for both the main and the control field to reach the water window spectral region in high-order harmonic generation up to the 320th harmonic of the driving field.

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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