All Questions
14
questions with no upvoted or accepted answers
5
votes
0
answers
86
views
Simulation of a dispersive crystal mirror
I am trying to simulate a simple setup where I have a point source of broadband light whose light is incident upon a spherical crystal at a central angle $\theta_i$. Assuming Bragg diffraction some of ...
- 1,047
3
votes
0
answers
338
views
Bandgap Spacing in Photonic Crystals
I am doing some self-study on photonics and have encountered the following question:
We know that amorphous electronic crystals such as amorphous silicon have a bandgap. Can amorphous photonic ...
- 283
2
votes
1
answer
97
views
Can polychromatic light be produced from monochromatic light after passing through a crystal in transmission spectroscopy?
I have an optical setup where monochromatic light (573.5nm) is passed through a cuprous oxide crystal (Cu2O). This light is then passed through a monochromator, but the output light is actually ...
- 21
2
votes
1
answer
105
views
Refractive Index Ellipsoid for Circular Birefringence Materials
When light travels through an anisotropic medium, its refraction may depend on both its polarization and propagation. Such materials may be classified in terms of their (Linear) Birefringence as ...
- 61
2
votes
0
answers
14
views
Atomic configuration along optic axis
How does the atomic configuration define a specific direction in a crystal called optic axis along which no birefrigence take place? What is so special about that particular axis ? What is the feature ...
1
vote
0
answers
57
views
What's the difference between a rhombus lattice and a hexagonal lattice in photonics?
I am learning photonic crystal slabs. I try to figure out what the difference between a rhombus lattice and a hexagonal lattice in photonics is?
All I know is that they have diffefent Brillouin zones,...
- 11
1
vote
0
answers
76
views
Jone calculus in crystal optics and electro-optic sampling
Assume a linearly polarized light passing through a retardation crystal and a quarterwave plate and the angle between the linear light and the principal axis is 45 degrees. The question is to ...
- 111
1
vote
0
answers
30
views
Orientation of KDP crystal to generate 4th harmonic using a Nd:YAG Q-switched laser and set temperature to stabilize crystal
I am setting up a 4th harmonic generator for a Q-switched Nd:Yag laser that will already have the second harmonic generator in place. I need to know how to orient the KDP crystal with respect to the ...
- 11
1
vote
0
answers
76
views
How does a liquid crystal on Silicon affect the phase of incident light?
When a polarized light beam is directed to a phase-only LCoS system how is the phase modulated ? What is the physical effect behind ?
Does voltage modulation has an impact on birefringence ?
- 111
0
votes
0
answers
50
views
How might one produce a glory -- a circular rainbow -- in crystal?
A glory is the technical name for a full circle rainbow, such as is sometimes (but rarely) seen from below above a waterfall, or below from above a cloud. I am asking this question here. because it ...
- 141
0
votes
0
answers
42
views
Optics experiment, rotating crystal, light always points down, is this possible?
Sorry for the loose title but the question is based on a bad memory. The story goes like this: Many years ago I took an electrodynamics course and as far as I remember the profesor brought a special ...
- 1
0
votes
1
answer
144
views
Confusion about OPTIC axis of an crystal
Why it is essential to set a particular direction for an OPTICS axis of a crystal (e.g. Calcite)? What is the importance of that direction?
0
votes
1
answer
120
views
Why only the phonon with $k=0$ contribute Raman intensity?
I have read some literature to know that Raman intensity corresponds to the inelastic scattering of light with ion vibrations, and the positions of Raman peak correspond to the energy of phonon.
My ...
- 132
-1
votes
1
answer
141
views
Refractive indices of liquid crystal
Refractive indices of liquid crystal • The birefringence is critical to the optical properties of the liquid crystal and underlies many of the applications of liquid crystals. • By reorienting the ...
- 1