All Questions
6
questions
0
votes
1
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38
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What is a true delay line and is there possibly a false delay line?
I'm reading "Silicon nitride passive and active photonic integrated circuits: trends and prospects" and one of discussed application of $\rm SiN$ is "true delay line". All the ...
- 3,034
0
votes
1
answer
61
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What happens when screen is not placed where Image is focused but elsewhere?
When we try to form a real image on a screen by a convex lens, we place the screen at a distance where the image is focused. But if we try to place the screen at a distance less than the distance ...
- 187
4
votes
1
answer
61
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Experimental detection of Anderson localization of light in 3D vs 2D
I have a question about the experimental realization of Anderson localization of light. I am a theorist, and have not worked much in optics, so please bear with me.
Anderson localization of light in ...
- 451
1
vote
0
answers
73
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Where can I purchase a funnel reflector? [closed]
I am designing a testing apparatus to contain the light emitted from a 40mm dia. xenon bulb and concentrate it at a 35mm dia. target.
My apparatus consists of a large funnel reflector: large hole dia....
- 189
5
votes
1
answer
308
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Optical Retroreflectors: How Are the Faces So Accurately Righted?
This question is about Optical Retroreflectors (corner cubes) and how the extreme precision in their manufacturing is achieved. I suspect there is interesting basic physics involved, which is why the ...
- 88.5k
0
votes
2
answers
282
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Doubt on Transmittance
I have a thin film deposited on a glass substrate, when I measure transmittance (T) of it ,should I use glass or air as the reference glass or air? and why?
Regarding these points:
for bare glass $T=...
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