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Dielectric Mirrors - Non-Normal Incidence

Center Wavelength (CWL) shift with AOI

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Fig.1:CWL s-pol. = CWL p-pol. for the same AOI
a)CWL for 0°
b)CWL for 45°

Modification of Spectral Properties

Effects of increasing AOI
  • HR range shifts to shorter wavelengths
  • Wider HRs-range
  • Narrower HRp- range
  • Increasing Rs at the CWL
  • Decreasing Rp at the CWL
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Fig.2:Effects of increasing AOI

CWL Shift with AOI

CWL = f (AOI)
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Fig.3:Rule of thumb for increasing AOI
Please note that the plots shown here are numerical results. The actual values may change if different methods are used. However, the overall behavior, including the rule of thumb, remains the same.

Split-up of s- and p-Polarization

Rmax (λ) = f (AOI)
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Fig.4:Difference in maximum reflectance (Rmax) for s- and p-polarization as a function of angle of incidence (AOI)
a)Angular dependence of R for s- and p-polarization
b)Reflectance range: from 99.8 % to 100 %
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