CS2 4.54 μm interference filter refractive index 1.34 dielectric layer

CS2 4.54 μm interference filter refractive index 1.34 dielectric layer

 

 

An interference filter is to be constructed

for isolation of the CS2 absorption band at 4.54 μm.

If the determination is to be based on first-order interference,

how thick should the dielectric layer be (refractive index 1.34)?

 

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λ_max = (2 t η) / n

 

> t: thickness of the dielectric layer

> η: refractive index = 1.34

> n: interference order = 1

 

 

 

t = (λ_max × n) / (2 × η)

= (4.54 μm × 1) / (2 × 1.34)

= 1.69 μm

 

 

 

답: 1.69 μm

 

 

 

 

[키워드] CS2 간섭 필터 기준문서