All Questions
Tagged with optics optical-materials
157
questions
2
votes
2
answers
321
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Temperature-induced wavelength shift of optical coatings?
Optical coatings designed for reflection or anti-reflection are made of many thin layers which will expand when heated. What will the effect be on the wavelengths the coating will reflect when the ...
- 31
0
votes
1
answer
100
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Creating small polarised scientific lenses?
How would I go about creating small polarised scientific lenses?
Thinking 5mm by 5mm, with a light-source behind it for the purposes of reducing (polarised) surface reflection (assisted with a cross-...
- 101
3
votes
1
answer
684
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Optical Waveguide's "Base Bandwidth"
Consider a dielectric slab waveguide (lossless, isotropic) illuminated transversally from the vacuum (with coherent, monochromatic light).
We define the base bandwidth of a waveguide (or optical ...
- 727
0
votes
1
answer
606
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Depolarisation of Light in Optical Fibre
I have a question for which I can't seem to find a solid answer in literature and wondered if anyone could offer advice or reliable references please:
How does light depolarise in non-polarisation-...
- 125
0
votes
2
answers
10k
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What is optical confinement?
What is optical confinement? What is it intuitively? How does this 'optical confinement' affect the performance of a laser?
- 1
7
votes
2
answers
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
116
votes
6
answers
115k
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Why is glass transparent?
Once I asked this question from my teacher and he replied "Because it passes light.". "And why does it pass light?" I asked and he said, "Because it is transparent.".
The same question again, Why ...
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