Properties: **`x`, `y`, `z` [`float` or `complex`]** — The `x`, `y`, and `z` components of the vector. Generally, functions that take a

Many Meep functions require you to specify a volume in space, corresponding to the C++ type `meep::volume`. This class creates such a volume

The `Matrix` class represents a 3x3 matrix with c1, c2, and c3 as its columns. ```python m.transpose() m.getH() or m.H m.determi

better name for centered "dielectric" grid

a Lorentzian susceptibility \chi(\omega) = sigma * omega_0^2 / (\omega_0^2 - \omega^2 - i\gamma \omega) If no_omega_0_denominator is true, then w

linked list of descriptors for boundary regions (currently just for PML)

Class which emulates the multi-core MPI behavior while on a single core. This inherits all methods from mp.Simulation but overrides two behaviors

A continuous-wave (CW) source is proportional to $\\exp(-i\\omega t)$, possibly with a smooth (exponential/tanh) turn-on/turn-off. In practic

A chunk balancer for adaptive chunk layouts in Meep simulations. This class generates initial chunk layouts using Meep's built-in scheme, and

This is a subclass of `Source` and has **all of the properties** of `Source` above. However, you normally do not specify a `component`. Inste

A Gaussian-pulse source roughly proportional to $\\exp(-i\\omega t - (t-t_0)^2/2w^2)$. Technically, the "Gaussian" sources in Meep are the (d

Binary tree class used for specifying a cell partition of arbitrary sized chunks for use as the `chunk_layout` parameter of the `Simulation`

A class to help make accessing and setting the global verbosity level a bit more pythonic. It manages one or more verbosity flags that are lo

Allows for testing of Verbosity without interfering with the singleton.

dft.cpp (normally created with fields::add_dft_energy)

dft.cpp (normally created with fields::add_dft_flux)

stress.cpp (normally created with fields::add_dft_force)

An introspected item that is a Class.

A user-specified source function $f(t)$. You can also specify start/end times at which point your current is set to zero whether or not your

A cylinder, with circular cross-section and finite height. **Properties:** + **`radius` [`number`]** — Radius of the cylinder's cross-s

An introspected item that is a function at module scope.

Harminv is implemented as a class with a [`__call__`](#Harminv.__call__) method, which allows it to be used as a step function that collects

This class is used to specify the materials that geometric objects are made of. It represents an electromagnetic medium which is possibly non

Container for Meep timing measurements and performance information. See https://meep.readthedocs.io/en/latest/Python_User_Interface/#simulati

An introspected item that is a method of a class. Mostly the same as a FunctionItem, but can do extra stuff for methods if needed.

The `Source` class is used to specify the current sources via the `Simulation.sources` attribute. Note that all sources in Meep are separable

Continuous (CW) source with (optional) slow turn-on and/or turn-off.

dft.cpp (normally created with fields::add_dft_fields)

near2far.cpp (normally created with fields::add_dft_near2far)

Gaussian-envelope source with given frequency, width, peak-time, cutoff

RAII-based profiling timer that accumulates wall time from creation until it is destroyed or the `exit` method is invoked. Not thread-safe.

Instead of a `PML` layer, there is an alternative class called `Absorber` which is a **drop-in** replacement for `PML`. For example, you can

Abstract chunk balancer for adaptive chunk layouts in Meep simulations. This class defines interfaces for a chunk balancer, which adjusts chunk

A class used to record the fields during timestepping (i.e., a [`run`](#run-functions) function). The object is initialized prior to timestep

A mixin for adding correct scalar/vector comparison.

Simple bilinear interpolation basis set.

A parallelepiped (i.e., a brick, possibly with non-orthogonal axes).

A cone, or possibly a truncated cone. This is actually a subclass of `Cylinder`, and inherits all of the same properties, with one additional

Wrapper around DFT objects that allows delayed initialization of the structure. When splitting the structure into chunks for parallel simulations

For mode decomposition or eigenmode source, specify a diffracted planewave in homogeneous media. Should be passed as the `bands` argument of `get

Specifies a single dispersive susceptibility of Drude form. See [Material Dispersion](Materials.md#material-dispersion), with the parameters

A differentiable frequency-dependent eigenmode coefficient.

An ellipsoid. This is actually a subclass of `Block`, and inherits all the same properties, but defines an ellipsoid inscribed inside the blo

A region (volume, plane, line, or point) in which to compute the integral of the energy density of the Fourier-transformed fields. Its proper

A `FluxRegion` object is used with [`add_flux`](#flux-spectra) to specify a region in which Meep should accumulate the appropriate Fourier-tr

A region (volume, plane, line, or point) in which to compute the integral of the stress tensor of the Fourier-transformed fields. Its propert

A differentiable frequency-dependent Fourier fields (dft_fields)

Identical to `GaussianBeam3DSource` except that the beam is defined in 2d. This is useful for 2d simulations where the 3d beam is not exact.

This is a subclass of `Source` and has **all of the properties** of `Source` above. However, the `component` parameter of the `Source` object is

Wrapper for GaussianBeam3DSource to warn the user when running 2D simulations that this behavior is deprecated and they should be using GaussianB

This class, and its descendants, are used to specify the solid geometric objects that form the dielectric structure being simulated. In

(**Experimental feature**) Specifies a single dispersive [gyrotropic susceptibility](Materials.md#gyrotropic-media) of [Lorentzian (damped ha

(**Experimental feature**) Specifies a single dispersive [gyrotropic susceptibility](Materials.md#gyrotropic-media) of [Lorentzian (damped ha

(**Experimental feature**) Specifies a single dispersive [gyrotropic susceptibility](Materials.md#gyrotropic-media) governed by a [linearized

created a source object using (SWIG-wrapped mp::srcdata*) srcdata.

Common base class for documentable items.

A differentiable LDOS

Specifies a single dispersive susceptibility of Lorentzian (damped harmonic oscillator) form. See [Material Dispersion](Materials.md#material

This class is used to specify materials on a rectilinear grid. A class object is passed as the `material` argument of a [`Block`](#block) geo

Wraps a Meep simulation object into a JAX-differentiable callable. Attributes: simulation: the pre-configured Meep simulation object.

A mirror symmetry plane. `direction` is the direction *normal* to the mirror plane.

Specifies a multievel atomic susceptibility for modeling saturable gain and absorption. This is a subclass of `E_susceptibilities` which cont

A differentiable near2far field transformation