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建模和优化时间相关的单光子计数精度在光寿命测量使用延迟控制的模型和优化
Optics express
|December 19, 2025
概括
精确的光寿命 (FL) 测量通过新的理论模型和延迟方法得到了改进. 这种方法优化了强度,以获得精确的结果,即使在高探测器和,使得更快的测量.
科学领域:
- 光子学和光谱学 在光子学和光谱学.
- 材料科学 材料科学 材料科学
- 生物物理技术 生物物理技术
背景情况:
- 精确的光寿命 (FL) 确定对于细胞分析和半导体表征的应用至关重要.
- 传统的与时间相关的单光子计数 (TCSPC) 方法由于高强度的堆积偏差和低计数率的统计不确定性而面临局限性.
研究的目的:
- 开发一个理论模型来量化TCSPC准确性限制.
- 为优化 FL 测量制定设计规则.
- 引入一种新的延迟方法,以提高FL测量的准确性和速度.
主要方法:
- 对TCSPC检测过程的分析建模.
- 为最大可用强度和光子计数制定设计规则.
- 使用单光子雪崩二极管 (SPAD) 探测器调整信号强度的延迟方法的实施和验证.
主要成果:
- 该理论模型准确地描述了TCSPC检测和FL测量精度.
- 延迟方法与算法相结合,在FL测量中达到±15%的精度.
- 即使在99%的探测器和率下,可实现稳健和快速的FL测量,采集时间低于毫秒.
结论:
- 开发的理论模型提供了对TCSPC检测的全面理解.
- 这种新的延迟方法为快速准确的光寿命测量提供了强大的解决方案.
- 这种方法克服了以前方法的局限性,使高精度FL分析在具有挑战性的条件下.
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