研究激光诱导水中冲击波产生的三维分析模型

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2024-10-18 DOI:10.1016/j.optlastec.2024.111962

Mohammad Saeed Ghahramani, Javad Khalilzadeh

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引用次数: 0

摘要

光声现象是产生声脉冲的有效方法。激光与等离子体的相互作用是研究光声现象的一个非常关键的课题。然而，基于等离子体球方法的现有研究往往忽视了这种相互作用，将声波视为等离子体的简单输出。本文提出了一个模型，用于分析纳秒激光与水相互作用时激光等离子体产生的冲击波。该模型根据所产生等离子体的特性，计算出关键的机械波特性，包括等离子体球边界的冲击波发射时间、冲击波的初始压力和波频。根据研究结果，功率密度为 6 GW.cm-2 的激光会产生初始压力为 4.3 MPa、频率为 4520 kHz 的冲击波。

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 3D analytical model to investigate laser-induced shock wave generation in water

Photoacoustic phenomenon offers an efficient means of generating sound pulses. The interaction of laser and plasma is a very crucial subject in the study of the photoacoustic phenomenon. However, existing researches based on the plasma sphere approach, often neglect this interaction, treating the sound wave as a simple output from the plasma. This paper presents a model for analyzing the shock wave resulting from the laser plasma when the nanosecond laser interacts with water. The model calculates key mechanical wave properties, including the shock wave emission time from the the plasma sphere boundary, the initial pressure of the shock wave, and the wave frequency, based on the characteristics of the created plasma. According to the investigations, a laser with a power density of 6 GW.cm⁻² creates a shock wave with an initial pressure of 4.3 MPa and 4520 kHz frequency.

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems