All Questions
Tagged with material-science optics
104
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Light acceleration method using inhomogeneous material mediia
Some time ago I posted this question but I reckon it was too vague. Nontheless, I've been working on it and I've come up with some interesting conclusions. My question is: can light be subject to an ...
- 1,616
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26
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Physical interpretation of a dielectric's absorption curve
A given dielectric will behave as an absorbing medium for some frecuencies (those near one of the material's several resonant frequencies), whilst it will behave as a non-absorbing medium for the rest ...
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17
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If a material is homogeneous in $\varepsilon$, can this material be made of different atoms?
I'm currently trying to derive the microscopic expression for the dielectric constant of a material following my proffessor's notes. However, he admits that, even though he assumes $\varepsilon=...
- 1,616
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23
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Vibrating object on optical table
Wikipedia says this about optical tables:
Many optical systems require that vibration of optical elements be kept small. As a result, optical tables are typically very heavy and incorporate vibration ...
- 1,440
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33
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Refractive index from absorbance, transmittance or reflectance spectra of thin film, knowing its thickness [duplicate]
I have absorbance (Abs), reflectance (R%) and transmittance (T%) data of TiO2 deposited thin film on FTO glass substrate. The data was collected using UV-Vis spectrophotometer. Also, I know the ...
- 11
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147
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Refractive index of titanium dioxide films as a function of wavelength for 400 C ° annealed films
I used UV-Vis/NIR spectrophotometer to extract the measurements of refractive index %R corresponding with wavelengths in the range of 190-1100 nm of TiO2 thin film deposited on FTO glass substrate. ...
- 11
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1
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161
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How hot can the focal point of a convex lens get under the full sun?
I could not find accurate data online apart from CSP power generators that could focus sun rays to a single point and heat a liquid to 1000°C.
I imagine many factors can affect the temperature, such ...
- 141
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How does quantum mechanics explain the color of macroscopic objects?
I am familiar with two explanations for the phenomenon of visible color.
The first is that, for any given object, there are some wavelengths of light it reflects and some it absorbs. The reflected ...
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134
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Refractive index dispersion relation of stainless steel
I am lookin for the refractive index dispersion relation of stainless steel.
I tried to search for it at https://refractiveindex.info/ and on google but I couldn't find anything.
I mainly need the ...
0
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1
answer
190
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How can I determine the initial conditions for the fit applied to the data obtained from the ellipsometry measurement?
For thin film solar cells, I need to know the refractive and extinction coeffiecients of these materials in order to make optical calculations of some materials on the computer.
For this I had to use ...
1
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2
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557
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Why do things have colour? (reflect certain wavelengths of light)
Why does something like an apple, which has many different types of atoms and molecules in different arrangements put together in a complex manner, reflect only certain wavelengths of light, instead ...
- 480
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59
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What formalism is used to model thin film optical coatings that function across a range of angles of incident light?
Thin film optical coatings [0] are atomically/molecularly thin layers of material applied to a substrate with the intent of affecting the optical properties of the substrate. For example, magnesium ...
- 21
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149
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What can be the possible causes for variation in stress-induced birefringence in an isotropic material?
Birefringence is the phenomenon of a material having a refractive index that depends on the polarization and propagation direction of light. When an unpolarized light passes through such a material, ...
- 21
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4
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124
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Do perpendicular lights interfere on a surface?
In the following experiment, we have an observer looking at a material illuminated by a light.
Imagine that the lights are similar to a laser (coherent?) so that all of the photons follow the ...
- 346
2
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2
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117
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Will the spacing between the mirror segments of the Webb space telescope degrade the sharpness of its images?
I've noticed that the existing spacing between the 18 mirror segments of the Webb space telescope are many times the operational infrared spectrum wavelengths (i.e. 0.6-28μm) of the telescope meaning ...
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