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Time-Resolved Studies of Nd:YAG Laser-Induced Breakdown: Plasma Formation, Acoustic Wave Generation, and Cavitation

机译：时间分辨研究Nd：YaG激光诱导击穿：等离子体形成，声波产生和空化

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The use of high intensity ultrashort pulsed laser radiation to produce optical breakdown is an important approach for the surgical treatment of intraocular structures. We have investigated the transient properties of Nd:YAG laser induced breakdown in a saline model using time-resolved spectroscopic techniques. Spatially resolved pump and probe techniques are applied to study the dynamic behavior of the plasma formation, acoustic wave generation, and cavitation processes which accompany the optical breakdown. Measurements of plasma shielding and luminescence indicate that the laser induced plasma forms on a subnanosecond time scale and has a lifetime of several nanoseconds. An acoustic transient is generated at the breakdown site and propagates spherically outward with an initial hypersonic velocity, then loses energy and propagates at sound velocity. Transient heating following the plasma formation produces a liquid-gas phase change and gives rise to cavitation or gas bubble formation. This gas bubble expands rapidly for several microseconds, then slows to reach its maximum size and finally collapses. Keywords: Ophthalmic surgery.

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Fujimoto, J. G.; Lin, W. Z.; Ippen, E. P.; Puliafito, C. A.; Steinert, R. F.;
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年度 1985
页码 p.1-8
总页数 8
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Ophthalmology; Surgery; Laser applications; Acoustic velocity; Acoustic waves; Bubbles; Cavitation; Dynamics; Eye; Gases; Hypersonic velocity; Luminescence; Medical services; Models; Plasmas(Physics); Probes; Salinity; Shielding; Spectroscopy; Structures; Transients; Gas b;

机译：眼科学;外科学;激光应用;声速;声波;气泡;空化;动力学;眼睛;气体;高超声速;发光;医疗服务;模型;等离子体（物理学）;探针;盐度;屏蔽;光谱学;结构;瞬变;气体b;

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机译：Nd：YaG激光诱导击穿光谱和横向激发大气CO2激光诱导气相等离子体光谱法对铬酸铜砷酸盐防腐处理木材的比较研究
8. Time-Resolved Studies of Nd:YAG Laser-Induced Breakdown: Plasma Formation, Acoustic Wave Generation, and Cavitation. [R] . Fujimoto, J. G., Lin, W. Z., Ippen, E. P., 1985

机译：时间分辨研究Nd：YaG激光诱导击穿：等离子体形成，声波产生和空化。

Time-Resolved Studies of Nd:YAG Laser-Induced Breakdown: Plasma Formation, Acoustic Wave Generation, and Cavitation

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