odak.wave.propagate_plane_waves¶
Definition to propagate a field representing a plane wave at a particular distance and time.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
field |
complex |
Complex field. |
required |
opd |
float |
Optical path difference in mm. |
required |
k |
float |
Wave number of a wave, see odak.wave.parameters.wavenumber for more. |
required |
w |
float |
Rotation speed of a wave, see odak.wave.parameters.rotationspeed for more. |
0 |
t |
float |
Time in seconds. |
0 |
Returns:
| Type | Description |
|---|---|
complex |
A complex number that provides the resultant field in the complex form A*e^(j(wt+phi)). |
Source code in odak/wave/vector.py
def propagate_plane_waves(field, opd, k, w=0, t=0):
"""
Definition to propagate a field representing a plane wave at a particular distance and time.
Parameters
----------
field : complex
Complex field.
opd : float
Optical path difference in mm.
k : float
Wave number of a wave, see odak.wave.parameters.wavenumber for more.
w : float
Rotation speed of a wave, see odak.wave.parameters.rotationspeed for more.
t : float
Time in seconds.
Returns
-------
new_field : complex
A complex number that provides the resultant field in the complex form A*e^(j(wt+phi)).
"""
new_field = field*np.exp(1j*(-w*t+opd*k))/opd**2
return new_field