Design of Ultra-narrow Band Pass Filter Used for Photoelectric Effect Experiment
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Citation
郝联捷 (HAO Lian-jie). (2010). 光电效应实验用超窄带通滤光片的设计 [Design of Ultra-narrow Band Pass Filter Used for Photoelectric Effect Experiment]. 文章编号：1673- 2014（2010）02- 0029- 03.
Keywords
- 光电效应实验 / Photoelectric Effect Experiment
- 普朗克常量 / Planck Constant
- 滤光片 / Filter
- 带宽 / Bandwidth
- 随机探索式优化法 / Random Exploration Optimization Method
- 膜系设计 / Film System Design
- 非规整膜系 / Non-periodic Film System
- Anderson 局域模 / Anderson Localization Mode
- 透射率 / Transmittance
- 中心波长 / Center Wavelength
- 截止区 / Stop Band
- 膜厚 / Film Thickness
- 氧化钛 / Titanium Dioxide, TiO2
- 氧化铝 / Aluminum Oxide, Al2O3
- 石英 / Quartz, SiO2
- 真空镀膜 / Vacuum Deposition
- 膜层涨落 / Film Layer Fluctuations
Brief
This article summarizes the design of an ultra-narrow bandpass filter for photoelectric effect experiments using a random exploration optimization method and the concept of Anderson localization to minimize errors caused by the broad bandwidth of traditional filters.
Summary
This article addresses the limitations of current filters used in photoelectric effect experiments, which have broad bandwidths that can lead to measurement inaccuracies in determining Planck's constant. To overcome this, the author proposes a new ultra-narrow bandpass filter design based on the concept of and a for the film system. The aim is to create a filter with a much narrower bandwidth centered on the desired spectral line, thereby improving the accuracy of photoelectric effect experiments by effectively filtering out unwanted wavelengths. The design utilizes non-periodic film stacks to achieve this narrow bandwidth and reduce sensitivity to manufacturing variations in film thickness.
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