Questions tagged [optical-materials]
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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-...
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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?
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Why are there direct bandgaps?
This Question has been bugging me for sometime. Some semiconductors have direct bandgaps and indirect bandgaps. So what causes a direct bandgap to occur? The physics behind ,why there are direct ...
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Twisted Nematic liquid crystal: extent of degradation due to DC drive?
It is commonly accepted wisdom that a Twisted Nematic LCD must always be driven using AC instead of DC, because DC will supposedly denature the LC. I have two questions:
Does this effect only happen ...
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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 ...
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What color does a transparent object reflect?
We say that an object's color is blue if the object is opaque, reflects blue color and absorbs waves of other colors. What color does a transparent object actually reflect?
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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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