[Meep-discuss] Electric Field/Spectrum from Dispersion Study?

Hello, I am trying to just study dispersion through a material. I don’t want to look at structural effects like reflections, so I don’t want to use a waveguide. My incoming source is an ultrashort, TM polarized gaussian pulse and I would like to see the final field, and if possible, it’s

[Meep-discuss] _rl_get_keymap_name with Sierra OS?

Hello, I am installing meep according to https://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg05812.html and I have made the configure file without issue. However, when I type make, I get the following

[Meep-discuss] Measuring exit plane e-field?

Hello Meep Users, I’d like to run a pulse through a 1D slab then measure the exit-plane e-field as a function of time. I do not want to measure the field within the entire slab. I set the geometry as: (set! geometry-lattice (make lattice (size no-size no-size sz))) ; create 1D system and

[Meep-discuss] Pulse Propagation Problem

Hello Everyone, I want to test my material by propagating a material down a 1D medium. I want to change the length of the medium in order to see how the pulse changes as it travels. I planned to do this by adjusting this line: (define-param sz 100) ; size of cell in z direction, 1 = 10 nm

[Meep-discuss] Multilevel-atomic susceptibility?

Hello, I’d like to make use of the multilevel-atomic susceptibility code found here: https://meep.readthedocs.io/en/latest/Scheme_Tutorials/Multilevel_Atomic_Susceptibility/ However, I see from this post

[Meep-discuss] Negative Permittivity?

Hello, I would like to probe a material with a pulse whose frequency has an epsilon = -.3 + .002i. I have tested the system with an epsilon of 1 and everything works as expected. I changed epsilon like so: (define-param r -.3) (define-param i .002) (set! default-material (make medium

[Meep-discuss] Theoretical vs Simulation not matching!

Hello, I’m running into a strange problem! I hope someone can help. I have defined a chirped pulse in MEEP, and propagated it down a vacuum. On first glance, it overlays very well on the theoretical pulse (I adjusted the theory’s amplitude to match MEEPs, since I didn’t think amplitude

[Meep-discuss] Gauss-src with linear chirp?

Hello Everyone, How would I go about making a gaussian source that has a quadratic phase? I know I need to adjust the amplitude, but how to I specify that it is quadratic? I noticed this example: (amplitude (exp (* 0+1i phi))) but I’m not getting the linear chirp I expect in the complex

[Meep-discuss] epsilon-input-file format?

Hello MEEP Users, I am trying to input a specialized complex permittivity using an HDF5 file using epsilon-input-file but I have run into problems with how the data needs to be represented. I have frequency data and permittivity data which I want to set the grid with. This is what the file I

[Meep-discuss] Multilevel-Atomic Susceptibility Units Question

Hello, I am working off of this: https://meep.readthedocs.io/en/latest/Scheme_Tutorials/Multilevel_Atomic_Susceptibility/ I was wondering why the emission frequency, having units of 2πc/a has the 2π in

[Meep-discuss] MEEP 1.6.0 with Singularity?

Hello All, I wanted to use MEEP v1.6.0 on a supercomputing resource I have access to, but it is not registering the multilevel-atom variable. Currently, the system uses a singularity found here [1]. And here is the error it gives [2], along with the tutorial test that I am using [3]. How can

Re: [Meep-discuss] Drude Model Method?

-near-zero or ENZ propagation? Thank you, Priscilla > On Jul 3, 2019, at 11:08 AM, Priscilla Kelly > wrote: > > Hello Dr. Johnson and MEEP users, > > I am studying dispersion and I found that MEEP uses the ADE method from one > of the boards in 2008. > https://w

[Meep-discuss] Drude Model Method?

Hello Dr. Johnson and MEEP users, I am studying dispersion and I found that MEEP uses the ADE method from one of the boards in 2008. https://www.mail-archive.com/meep-discuss@ab-initio.mit.edu/msg01611.html I am