Questions tagged [optics]
Optics is the study of light, and its interaction with matter. It includes topics such as imaging systems, fiber optics, lasers, quantum optics, and more.
42
questions
0
votes
0
answers
11
views
How do I calculate the absorption of single layers of a multilayer stack using the electric field in each layer?
I'm trying to calculate the absorbance of individual layers using the transfer matrix method but I'm stuck on how to do it. The code I am using can give the total absorbance of the system, and the ...
- 1
1
vote
1
answer
37
views
Permittivity real and imaginary parts with similar value possible?
Here's the context; I'm studying biological tissues that are supposed to behave like dielectrics. Using the modified cole-cole equation for theoretical predictions:
$$\tilde{\varepsilon}_r (\omega )= \...
- 189
1
vote
0
answers
27
views
Are there any commercially made optical fibers which are made specifically to have very low microphonic properties for application in interferometry
Are there any commercially made optical fibers which are made specifically to have very low microphonic properties for applications in interferometry. While building a fiber optic interferometer I ...
- 238
0
votes
0
answers
17
views
Scattering into an edge state
In the optical context, a photon can excite an electron from the valence band to the conduction band if the photon energy is higher than the gap. I would like to know is it possible to photoexcite an ...
- 303
0
votes
0
answers
37
views
Principal plane of the lens [closed]
I want to set up an optical system as shown in the figure.
A laser beam passes through a diffraction grating, then a beam splitter, through a 35mm focal length lens to the object, and then is ...
- 1
1
vote
0
answers
22
views
Double refraction - Direction of propagation of extraordinary wave inside the birefringent medium
I am reading Optics by Ajoy Ghatak, in which the author explains the phenomenon of double refraction in a calcite crystal using Huygens' principle. My query is in the analysis of the case of normal ...
- 11
1
vote
0
answers
21
views
3x3 beam transfer matrix tilt angle transformation [closed]
I'm trying to use the formalism from 'Generalized beam matrices. III. Application to
diffraction analysis' and 'Generalized beam matrices: Gaussian beam propagation in misaligned complex optical ...
- 11
1
vote
1
answer
63
views
Why laser output power fluctuates after passing through two 1x2 fiber optic couplers?
When laser source is launched into two 1x2 50/50 fiber optic couplers connected as below the output power constantly fluctuates in range of 70 uW.
The fluctuation happen roughly one to two times per ...
- 238
0
votes
0
answers
24
views
Solarization Spectrum
I'm looking to better understand the relation between the spectrum of the light which induces solarization in glass and the spectrum of the induced absorption.
More specifically, I'm interested in ...
- 1,538
0
votes
1
answer
44
views
Most generic form of refractive index tensors
The refractive index of a material is in general a $3x3$ tensor (as in the case of birefringent crystals). From literature, it seems that in the case of transparent crystals, this tensor is in general ...
- 141
0
votes
0
answers
42
views
Radiation energy and momentum relation [duplicate]
Why is $\rho = 3p$ for radiation? What is the intuition behind this? If we had only 2 spatial dimentions, would it be $\rho = 2p$?
(I came across this relation while studying the state of the universe,...
- 1,141
-3
votes
1
answer
56
views
Why aren't all objects and their images same in size?
Suppose there is an object in front of a convex lens and we know that the light rays from each point on the surface of object will converge at a different point and form an image. So that means that ...
3
votes
0
answers
46
views
Relating Brachistochrone problem to Fermat's principle of least time [closed]
When I came across the Brachistochrone problem, my teacher said we could relate it to Fermat's principle of least time.
So, we could make many glass slabs of high $\mathrm dx$, and every slab has a ...
- 31
0
votes
0
answers
95
views
How to compute the diffraction efficiency of a thin phase grating with arbitrary groove shape?
From Magnusson and Gaylord (1978), the wave amplitudes, $S_i(z)$, of $p$-polarized light for a thin, arbitrary phase grating are given by the equation
$$
\frac{\partial S_i}{\partial z} + \gamma \sum_{...
- 123
1
vote
1
answer
47
views
"Extraordinary polarization" in a birefringent optical medium
In Nonlinear Optics by R. W. Boyd, I came across the following sentences about light polarization in an uniaxial birefringent medium:
Light polarized perpendicular to the plane containing the ...
- 437