finesse.gaussian.BeamParam.curvature¶
- BeamParam.curvature(z=None, wavelength=None, nr=None, w0=None)[source]¶
Curvature of the beam wavefront as a function of any of the dependent arguments.
Calling this method with no arguments is equivalent to accessing
BeamParam.S
.- Parameters:
- zfloat, optional
Distance along optical axis relative to waist, defaults to
BeamParam.z
for this beam parameter.- wavelengthfloat, optional
Wavelength of the beam to use, defaults to
BeamParam.wavelength
for this beam parameter.- nrfloat, optional
Refractive index to use, defaults to
BeamParam.nr
for this beam parameter.- w0float, optional
Waist-size of the beam, defaults
BeamParam.w0
for this beam parameter.
- Returns:
- Curvature of the beam using the specified properties.