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A physicist wishes to deposit a thin film on both sides of a glass (with index of refraction 1.50) window to reduce reflected light of wavelength 532nm to 0%

In order to achieve 100% destructive interference for light reflectedo ff of the air /thing film inteference and the light reflected off the thin film/glass interface what must hte index of refraction of the thin film be??

so its is purely destructive

[tex] 2d + \frac{1}{2} \lambda = (m+ \frac{1}{2}) \frac{\lambda}{n} [/tex]

what is the value of m though?? So would i assume m=0?? But then what is the value of the thickness?? Sincei want to find the index of refraction ,n.

Perhaps the subsequent sub questions have somethin to do with this answer?

I could do this if i knew the index of refraction...

What thickness of a film will give this 100% AR effect at 532nm?

What fraction of light at twice the laser wavelength lambda = 1264nm will be reflected from this AR coated window?

P.S. Dont ask me what AR is, i dont know either!

In order to achieve 100% destructive interference for light reflectedo ff of the air /thing film inteference and the light reflected off the thin film/glass interface what must hte index of refraction of the thin film be??

so its is purely destructive

[tex] 2d + \frac{1}{2} \lambda = (m+ \frac{1}{2}) \frac{\lambda}{n} [/tex]

what is the value of m though?? So would i assume m=0?? But then what is the value of the thickness?? Sincei want to find the index of refraction ,n.

Perhaps the subsequent sub questions have somethin to do with this answer?

**Sketch a graph of the reflected intensity for lambda = 532nm as a function of thickness T 0<T<2000 nm**I could do this if i knew the index of refraction...

What thickness of a film will give this 100% AR effect at 532nm?

What fraction of light at twice the laser wavelength lambda = 1264nm will be reflected from this AR coated window?

P.S. Dont ask me what AR is, i dont know either!

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