伴隨雷射誘發擊破的流體高速動力型態與光電作用之研究
Abstract
傳統雷射誘發擊破在光譜學的研究常被用來做為材料分析、環境檢測之
用。流體的空穴泡泡與噴流、聲致發光現象的研究也一直在物理領域是相當
受到重視的研究題目。由於過去的研究經驗，逐步發現這個題目的關聯性與
重要。觀察近年來的科技進展，預期雷射誘發流體擊破的相關衍伸應用與研
究題材將有爆發性的成長，也與國內未來產業發展習習相關。而早期從事這
方面應用的產業或研究人員多不屬於光電或雷射物理領域，因此希望我們的
投入，能結合相關領域與先進的光電技術，建立國內這方面的研究基礎，也
能提供不同的觀點。在本計劃中將結合(或發展)多種雷射系統與光電調控方
式，研究包含純水、水溶液或其他黏滯性流體、疏水性流體薄層、雷射擊發
之熔融態金屬與電漿，伴隨雷射誘發擊破的高速動力行為與型態、以及光電
反應。並研究雷射擊破時、雷射誘發砲砲塌縮震盪時、聲致發光這三者所產
生的暫態光譜，了解其機制與異同，是否有進一步的應用。而操控雷射和邊
界條件對流體作用之後，對流體的作用與震盪現象，除了震盪模態本身的物
理研究，噴流與衝擊波的現象有重要的應用。雷射對熔融態金屬與電漿的交
互作用的瞭解，則是本計劃的另一個重點。透過本計劃也同時發展了更完整
的高速光電量測技術。
The project is to study the high-speed dynamic and optoelectronic interaction of fluid with laser-induced breakdown. The proper experimental instrument and laboratory will be setup. The works will be done in three years: 1. observe and simulate the single cavitation bubble, shock wave, and water jet with free surface, 2. Dynamics of cavitation bubble and water jet with transverse boundary, 3. laser-induced motor-free actuator, 4. single- and multi-pulse interaction of plasma and sprayed/deposited nano-particles, 5. optical absorption dynamics, 6. Water laser dynamics and laser-induced breakdown with laser wavelength around 2.9μm.
The project is to study the high-speed dynamic and optoelectronic interaction of fluid with laser-induced breakdown. The proper experimental instrument and laboratory will be setup. The works will be done in three years: 1. observe and simulate the single cavitation bubble, shock wave, and water jet with free surface, 2. Dynamics of cavitation bubble and water jet with transverse boundary, 3. laser-induced motor-free actuator, 4. single- and multi-pulse interaction of plasma and sprayed/deposited nano-particles, 5. optical absorption dynamics, 6. Water laser dynamics and laser-induced breakdown with laser wavelength around 2.9μm.