All Questions
Tagged with optical-materials experimental-physics
12
questions
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Second Harmonic Generation on chiral surfaces
I try to recreate a fit in this paper on SHG on chiral surfaces.
I guess the question itself is too specific to get an answer, so I state these questions that are a bit more to the point (and leave my ...
- 535
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1
answer
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
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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
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Deriving Wavelength from Relative Intensity with Broad Spectrum Light Sensor [closed]
I have this broad spectrum light sensor and it gives me readings in relative intensity, but says that it's able to measure the wavelength. The documentation is rather unhelpful, so I was wondering how ...
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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
1
answer
44
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Detection of charged particle in optical fiber cable
There is a charged particle source and a light source attached to optical fiber cable which is attached to a light detector.
Is it possible to detect the passage of a charge particle through the ...
- 13
1
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0
answers
88
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Ovalization of a pvc pipe under a weight
I'm not sure if this is the right place to ask this question, but it came up in one of my physics courses so here goes.
I want to measure a weight using a Fiber Bragg Grating optic cable. Someone ...
- 31
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2
answers
94
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Why is it important to measure permittivity and permeability complex of materials?
I know that in general, $\epsilon(r,\omega)$ and $\mu(r,\omega)$ are complex tensors, so now how do you resolve maxwell equations?
I don't understand why there are techniques to measure them if you ...
- 161
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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....
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-1
votes
1
answer
54
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Relating to IR rays [duplicate]
I am working on a project where I am putting an IR sensor similar to what we use IR module for Arduino.I just want a material that can pass the IR rays but it should be opaque to visible eyes .Like ...
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
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2
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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=...
- 11