532nm雷射誘發爆破產生電漿子的 散射與時域分析

Scattering and Time Domain Analysis of Plasma Generated by 532nm Laser-Induced Breakdown

黃振紳(Chen-Shen Huang)

指導教授 ： 蘇冠暐

國立交通大學/理學院/電子物理系所/碩士(2020年)

摘要

此研究目標在於利用雷射誘發產生電漿子爆破在空氣中，形成散射光的現象，透過肉眼觀看，電漿子呈現環繞式立體投影。我們利用高功率的波長1064的Nd:YAG 固態Q開關雷射經過倍頻KTP轉換產生532nm波長綠光，聚焦爆破產生散射光。針對在各角度分布上的散射強度進行量測，也確認肉眼所見的光為散射光。針對角度上分析後也進行產生電漿子的內部結構分析，分析電漿子非肉眼所見的單顆現象，而產生有具體的顆粒，故在顆粒內部結構進行電漿子的時域分析。

關鍵字

雷射誘發爆破 ； 時域分析 ； 散射率 ； 角度分析 ； 電漿子

並列摘要

The goal of this research is to use laser to induce plasma breakdown in the air to form a phenomenon of scattered light. Through the naked eye, the plasma presents a surround stereo projection. We use a high-power Nd:YAG solid-state Q-switch laser with a wavelength of 1064 to produce 532nm green light through frequency-doubled KTP conversion, and focus blasting to produce scattered light. Measure the scattering intensity at each angle distribution, and confirm that the light seen by the naked eye is scattered light. After that, we analyze the internal structure of the plasma. We analyze the single-family phenomenon of the plasma that is not visible to the naked eye, and specific particles are generated, so the time domain analysis of the plasma is performed on the internal structure of the particles.

並列關鍵字

Breakdown ； Plasma ； Angle distribution

參考文獻

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