All Questions
Tagged with optical-materials photons
9
questions
1
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2
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557
views
What, really, makes glass transparent? [duplicate]
I don't mean to be cheeky with the question, but it reflects the myriad of often seemingly conflicting answers I've seen around this. And that's not surprising of course given the dual nature of light ...
- 13
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
0
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1
answer
294
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Does optical density depend upon concentration of a solution?
Does optical density vary upon the amount of salts dissolved in water?
- 5
-1
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1
answer
34
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Cooling photons to a solid state
Can we cool photons so the stop moving completely?
So they can behave like particles in a solid.
1
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1
answer
121
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Is it possible to have an optical version of a greenhouse? With optical fibers?
Optical fibers transport light within them using internal reflection, but the light only enters from one end of the fiber. Is it possible to somehow have light entering from the sides of the fiber (...
- 325
1
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1
answer
61
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Material that changes transparency when lased from side?
I am into photonics research, and have been searching about this topic in vain, but almost nothing from Google shows up. So i turned here for some light.
Do you guys know any material that changes ...
- 261
1
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0
answers
57
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What is the principle behind the use of one LASER for optical pumping of Rubidium in presence of magnetic field?
How can we use a single LASER for optical pumping of rubidium in the presence of magnetic field as the zeeman levels are degenerate in the presence of magnetic field and how to decide upon the ...
- 51
0
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0
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90
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What are the factors affecting transparency and color of a substance [duplicate]
What is the reason behind visual properties like color and transparency of different substances? I have always heard that the structure of the substance is responsible for these properties. I always ...
- 302
7
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2
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1k
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Slowing down light in an opaque crystal for a whole minute
I just read about a team of physicists at the University of Darmstadt, Germany, that managed to completely slow down a beam of light that traveled through an opaque crystal (article here).
How is it ...
- 758