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具有时间分辨率的光子计数的里埃变换微光谱技术使得同时进行拉曼和光寿命成像
Lindong Shang1,2,3, Xiaodong Bao1,2,3, Hao Peng1,2,3
1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China.
Light, science & applications
|October 29, 2025
概括
我们开发了一个新的光谱平台,以克服时间门拉曼光谱的局限性. 这种仪器有效地分离拉曼和光信号,具有高光谱分辨率和广泛的光谱范围.
科学领域:
- 频谱学是一种光谱学.
- 光子学是指光子学的使用方法.
- 分析化学 分析化学
背景情况:
- 时间隔离的拉曼光谱具有局限性,包括狭窄的光谱范围和低光谱分辨率.
- 同时获取拉曼和光生命周期图像是具有挑战性的.
研究的目的:
- 开发一个富里埃变换光子计数光谱平台.
- 克服现有的时间隔离拉曼光谱法方法的局限性.
- 为了同时获得拉曼和光寿命图像.
主要方法:
- 使用了一种具有高精度线性电机阶段的马赫-泽恩德干扰仪.
- 使用光子计数雪崩二极管和时间标记获取.
- 光子根据粗到达时间 (50 ns步骤) 和细到达时间 (80 ps分辨率) 进行了分类.
主要成果:
- 实现了 547 ps 的时间分辨率.
- 获得了 -1000到10,000厘米的广泛光谱范围-1拉曼转移.
- 达到0.05厘米-1的高光谱分辨率.
- 成功地将拉曼信号 (激发脉冲期间) 与光信号 (激发脉冲后) 分离.
结论:
- 开发的里埃变换光子计数光谱平台有效地解决了时间关拉曼光谱学的局限性.
- 该仪器展示了同时采集和分离拉曼和光信号的能力.
- 使用光涂层片和微球进行验证.
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