hodjat hajian wrote:
> Is it possible to specify epsilon as an arbitrary function of
> frequency (not in Lorentzians or Drude form) in Meep?
NO
> If your answer is NO, please give me an alternative.
> Thank you in advance for your time.
You have to build a time domain response model with the
p.kins...@ic.ac.uk wrote:
> You need a double source - essentially crossed electric
> and magnetic dipoles (I posted something on this in
> this ng sometime last year). Or drop a PML just behind
> your ordinary source.
http://comments.gmane.org/gmane.comp.science.electromagnetism.meep.general/35
Huntoon, Nathan R wrote:
> I'm trying to generate a launch source that only has a direction
> of propogation in the positive Z dimension. I'm using the code
> posted here on a guassian spatial profile and I specify the k
> vector to be (0 0 1), but this launches fields in both the +
> and - z
p.kins...@ic.ac.uk wrote:
> Either both MEEP and my own simple FDTD code are wrong in the same
> way, or an incoming cylindrical wave modelled in 1D cylindrical
> coordinates (ie just r) behaves very oddly as it passes through the
> origin.
Having just done a Bessel function decomposition, I have
Either both MEEP and my own simple FDTD code are wrong in the same
way, or an incoming cylindrical wave modelled in 1D cylindrical
coordinates (ie just r) behaves very oddly as it passes through the
origin.
I would expect that an incoming cylindrical wave (centred on r=0)
would pass through the co
??? wrote:
> It wants to delay one source of wave of two source of waves in half
> wavelength and to output it.
I also want to have differently phased sources; is there a way
of adding a phase factor or time-offset to sources? I can't find
anything in the doco.
--
---
Using a linear array of point sources in 2D, the results can look pretty good:
; ==
; ==
; Directional source array
;
; Paul Kinsler / Imperial College London,
p.kins...@ic.ac.uk wrote:
> Make a uni-directional light source.
> [...] likewise if you want
> to specify a direction the isn't along a lattice direction I think
> (I haven't tried it yet) you'll get small, resolution dependent,
> and remarkably persistent imperfections.
Oops. Although it work
Ziming Meng wrote:
> I want to output the backwardly reflected field
> pattern for normal incidence. However, it is usually superimposed
> with the backward propagation of the light source. Then just using
> the output-field function fails to do that. In calculating reflection
> spect
Judson Ryckman wrote> When I use this
definition, the simulation runs great.? However,
> suppose my epsilon was now eps = -4.4 + 3.9605i.? I could arbitrarily,
> change the epsilon term (eps_inf) from 0.3 to -0.2.?
Strictly speaking, eps_inf should always be exactly 1 (the vacuum
value); althou
Alexandr Sadovnikov wrote:
> I tried to download the article which Dr. Paul Kinsler refer
> to from the website [...]
I suggest contacting the author directly -- Amiranashvili's
email is visible at
http://ito.wias-berlin.de/contact/staff/index.jsp?lang=1
In the other part of the thread,
Alexandr Sadovnikov wrote:
> And in this computational task one have to use
> the relative permeability tensor (aka mu) and
> the components of this tensor depend on the frequency.
> And the main question is how can I do a material
> with a the relative permeability tensor with the components
>
k...@vt.edu wrote:
> I was reading "Photonic crystals: semiconductors of light" by Eli Yablonavitch
> (Scientific American December 2001 ). I have a simple question about a figure
> of 1D photonic crystal shown in that paper.
> Please find the relevant figure here
> http://filebox.vt.edu/users/kdas
Shavkat Nizamov wrote:
> Surprisingly, some times the call of
> field_energy_in_box(Ey, self.vol.surroundings())
> results in negative values. I wonder, what does this mean ?
I suspect a non-optimal calculation of energy, see e.g.
Power loss and electromagnetic energy density
ObsessiveMathsFreak wrote:
> What I would like to do is generate a inwardly collapsing spherical wave
> front, but meep does not seem to support sources with complex geometry.
An inwardly collapsing spherical wave is a time-reversed outwardly
expanding spherical wave.
So why not generate an ex
Steven G. Johnson wrote:
> On Aug 14, 2009, at 12:54 PM, p.kins...@ic.ac.uk wrote:
> > I'd like to simulate magneto-electric materials (etc),
> > i.e. where D depends on H, and B on E.
> > As far as I can tell, meep doesn't do this. Would it
> > be hard to implement?
> Meep doesn't currently supp
I'd like to simulate magneto-electric materials (etc),
i.e. where D depends on H, and B on E.
As far as I can tell, meep doesn't do this. Would it
be hard to implement?
--
-+-
Dr. Paul Kinsler
Blackett Laborator
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