红色随机激光基于热化:合成和描述
Jassim Mohammed Jassim1, Majid F Haddawi2, M J Mohammed3
1Department of Laser Physics, College of Science for Women, University of Babylon, Hillah, Iraq. wsci.jassem.mohamed@uobabylon.edu.iq.
Journal of fluorescence
|March 24, 2025
概括
这项研究使用CW激光在纳米粒子注入染料溶液中研究热开花 (TB). 纳米粒子影响热化和随机激光作用,影响辐射光谱特性.
科学领域:
- 激光物理 激光物理
- 纳米材料科学 科学 纳米材料科学
- 流体动力学 流体动力学
背景情况:
- 自相调制 (SPM) 是一种非线性光学现象.
- 热开花 (TB) 随着液体在激光照射下变热和变形而跟随SPM.
- 纳米粒子可以改变流体的热和光学特性.
研究的目的:
- 为了研究各种纳米粒子在染料溶液中的热开花现象.
- 分析纳米颗粒对热化和泡形成的影响.
- 为了研究热化对随机激光作用的影响.
主要方法:
- 使用405nm的连续波 (CW) 激光器,具有100mW的光功率.
- 将激光束聚焦在一个含有Ag NWs,Fe2O3和AgNWs:Fe2O3纳米粒子的染料溶液的石英上.
- 观察到远场衍射模式和特征随机激光作用.
主要成果:
- 观察到从自相调制 (SPM) 循环的转变到一个明显的衍射图案,表明热开花 (TB).
- 证明纳米粒子 (Ag NWs,Fe2O3) 影响热化过程中泡形成的速度和数量.
- 在存在或不存在热化时,观察到随机激光作用.
- 发现热腔显著影响门,光谱线宽度和排放强度.
结论:
- 热开花是SPM之后的一个独特阶段,受到纳米粒子诱导的热化的影响.
- 纳米粒子在调节热化动态和随机激光发射方面发挥着至关重要的作用.
- 热腔的存在显著改变了激光发射光谱的特征.
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