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Using the one-dimensional transmission matrix method to design dielectric multi-layer optical films (can be multi-layer, refractive index gradient layer, etc. in any form) in the visible light band (400-700nm), the higher the transmittance, the better, and the wider the spectrum width, the better. The specific structural parameters, medium type, and numerical simulation results of the design are given.
Designing dielectric multilayer optical films in the visible light band can be achieved using a one-dimensional transmission matrix method. Here is an example design based on this approach:
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Structural parameters:
- Number of optical film layers: 3 layers
- Material 1: Air (refractive index 1)
- Material 2: Silica (refractive index 1.45)
- Material 3: Titanium dioxide (refractive index 2.4)
- Wavelength range: 400-700nm
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Design steps:
- According to the required transmittance and spectral width, select the appropriate number of layers and material refractive index.
- The transfer matrix for each layer is calculated using the one-dimensional transfer matrix method.
- Optimize the thickness of each layer based on the desired transmittance and spectral width.
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Numerical simulation results:
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Assume that the designed multilayer film has the following parameters:
- Number of layers: 3 layers
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