All Questions
Tagged with optical-materials quantum-mechanics
11
questions
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Reflection of light on a colorless material. What happens on atomic level?
I try to understand reflection explained with photons that are interacting with molecules on atomic level.
For this I would like to start with an example and ask the question based on this:
Say I have ...
- 153
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Quantum Dot Surface Area to Volume Relationship
Do the properties off quantum dots depend more on their surface area rather than the volume they occupy?
Depending on the case, then would quantum dots of different shapes show different properties?
- 477
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Small values and Negative nonlinear susceptibility of a degenerate parametric amplifier
The quantum Hamiltonian of a degenerative parametric amplifier (DPA) is given by (taking $\hbar=1$
$$
\hat{H}=\omega\hat{a}^{\dagger}\hat{a}+2\omega\hat{b}^{\dagger}\hat{b}+\kappa\left(\hat{a}^{\...
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Why doesn't infrared radiation pass through objects?
It cannot be due to Raman scattering because $1$ in $10^7$ photons are Raman scattered. It cannot be Rayleigh scattering because Rayleigh scattering of infrared radiation is very low due to the ...
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1
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How reflectivity of metals depends on the condition of the surface?
Does it depends on the flatness and pureness of surface. does it change when dust or oxides settle on it.
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Periodic multi-layer scattering of neutrons
I am trying to understand the reflectivity plot on slide 26 of Neutron optics,Soldner lecture.
1.Is the peak from $\theta$=0.0 to 0.4 due to total external reflection from the first upper surface?.
...
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3
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2
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86
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Is there super-transmissivity?
I have little knowledge about quantum phenomena, but I have read about super-conductivity and super-fluidity. The first involves zero resistance and the second involves zero viscosity. I suddenly ...
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468
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Crystal field in diamond
The crystal field effect occurs in ionic crystals and causes a splitting of the magnetic quantum levels of the cation. The magnitude of the splitting may be roughly computed by obtaining the potential ...
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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 ...
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3
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1
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Is it possible to make an optical lense that is an analog to a gravitational lense?
There are many lenses that do all sorts of things. eg. horshoe lenses twist light, meta material lenses can boggle the mind.
Is it possible to make an optical lense that is an analog to a ...
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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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