950 nm飞秒激光脉冲在二氧化碳中成丝过程中的超发光

IF 1.3 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2025-09-04 DOI:10.1134/S0021364025606694

Ya. V. Grudtsyn, A. A. Ionin, I. O. Kinyaevsky, Yu. M. Klimachev, A. V. Koribut

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引用次数: 0

摘要

Ti：蓝宝石激光器在二氧化碳中进行950 nm飞秒辐射成丝时，在310 ～ 470 nm波长范围内获得了大量的定向超发光谱线。这些谱线被确定为CO \(_{2}^{ + }\)离子的电子激发态A2Πu和X2Πg态的振动能级之间的过渡谱线。研究了压力对辐射谱的影响，并讨论了观测到的现象的机理。

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Superluminescence During the Filamentation of 950-nm Femtosecond Laser Pulses in Carbon Dioxide

Directional superluminescence on a large number of spectral lines in the wavelength range of 310–470 nm has been obtained during the filamentation of 950-nm femtosecond radiation from a Ti:sapphire laser in carbon dioxide. The lines have been identified as transition lines between the vibrational levels of electron-excited A²Π_u and X²Π_g states of CO\(_{2}^{ + }\) ions. The effect of the pressure on the radiation spectrum has been studied and mechanisms of the observed phenomenon are discussed.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.