Femtosecond Laser Pulse Spectrum Transformation during Propagation in the Atmosphere

IF 0.9 Q4 OPTICS

Atmospheric and Oceanic Optics Pub Date : 2025-03-04 DOI:10.1134/S1024856024701033

V. E. Prokop’ev, D. M. Lubenko

引用次数: 0

Abstract

Transformation of spectral parameters of a femtosecond laser pulse propagating in the atmosphere and in pure molecular nitrogen in the filamentation mode is experimentally studied; its causes are analyzed. The spectral broadening of pumping radiation in a wide range, from 350 to 1100 nm, is shown to be due to the combined action of Stokes stimulated Raman scattering at rotational transitions of nitrogen molecules in air, coherent anti-Stokes scattering, and cascade parametric four-wave mixing. The study of these processes is to make it possible to create highly efficient white light sources for atmospheric spectroscopy and remote sensing.

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飞秒激光在大气中传播过程中的光谱变换

实验研究了飞秒激光脉冲在大气和纯分子氮中以成丝模式传播时光谱参数的变换。分析了其产生的原因。抽运辐射在350 ~ 1100nm范围内的光谱展宽是由于空气中氮分子旋转跃迁时的Stokes激发拉曼散射、相干反Stokes散射和级联参数四波混频的共同作用。对这些过程的研究是为了制造用于大气光谱学和遥感的高效白光光源。

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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来源期刊

Atmospheric and Oceanic Optics OPTICS-

CiteScore

2.40

自引率

42.90%

发文量

期刊介绍： Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.