Influence of Laser Incidence Angle on Transmission Characteristics of Bandpass Filters

Citation

邵碧波 (Shao, B.-B.), 王 平 (Wang, P.), 卢嘉春 (Lu, J.-C.), 吴 勇 (Wu, Y.), 陈绍武 (Chen, S.-W.), 宇文璀蕾 (Yuwen, C.-L.), & 冯 刚 (Feng, G.). (2009, November). 激光入射角对干涉带通滤光片输出性能的影响 (Influence of Laser Incidence Angle on Transmission Characteristics of Bandpass Multilayer Thin<0xE2><0x94><0x87>Film Filters). Chinese Journal of Spectroscopy Laboratory, 26(6), 1457-1460.

Keywords

  • 激光入射角 / Laser Incidence Angle
  • 干涉带通滤光片 / Interference Band-Pass Filter
  • 输出性能 / Output Performance
  • 红外光谱 / Infrared Spectroscopy
  • 中红外激光 / Mid-Infrared Laser
  • 峰值波长 / Peak Wavelength
  • 峰值透过率 / Peak Transmittance
  • 通带半宽度 / Passband Half-Width
  • 3-5μm 波段 / 3-5μm Band
  • 大气窗口波段 / Atmospheric Window Band
  • 多层介质膜 / Multilayer Dielectric Film
  • 薄膜技术 / Thin Film Technology
  • 光学特性 /Optical Characteristics
  • 透射光谱 /Transmission Spectrum
  • 折射率 / Refractive Index
  • 位相厚度 / Phase Thickness
  • 计算机模拟 / Computer Simulation
  • 实验研究 / Experimental Research
  • 3.8μm / 3.8μm
  • 透射率 / Transmittance
  • 光谱截取 / Spectral Interception
  • 窄线宽激光光源 / Narrow Linewidth Laser Source

Brief

This study investigated the effect of laser incidence angle on the output performance of interference band-pass filters, finding that changes in the angle significantly impact the peak wavelength and transmittance, with specific analysis for 3.8μm mid-infrared lasers.

Summary

This paper examines how the angle of laser incidence impacts the performance of interference band-pass filters, revealing that increasing the angle shifts the peak wavelength to shorter wavelengths and reduces the peak transmittance, with optimal transmission for 3.8μm lasers observed at incidence angles between 0° and 30°. These findings can be used for spectral filtering and creating narrow linewidth mid-infrared laser sources.

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