laserbeamsize.m2_display Module

A module for finding M² values for a laser beam.

Full documentation is available at <https://laserbeamsize.readthedocs.io>

Finding the beam waist size, location, and M² for a beam is straightforward:

>>> import numpy as np
>>> import matplotlib.pyplot as plt
>>> import laserbeamsize as lbs
>>>
>>> lambda0 = 632.8e-9  # meters
>>> z = np.array([168, 210, 280, 348, 414, 480, 495, 510, 520, 580, 666, 770]) * 1e-3
>>> r = np.array([597, 572, 547, 554, 479, 403, 415, 400, 377, 391, 326, 397]) * 1e-6
>>>
>>> # create a graphic of the fit
>>> lbs.M2_diameter_plot(z, 2 * r, lambda0)
>>> plt.show()
>>>
>>> # create a better graphic of the fit
>>> lbs.M2_radius_plot(z, 2 * r, lambda0)
>>> plt.show()

Functions

M2_diameter_plot(z, dx, lambda0[, dy, ...])	Plot the semi-major and semi-minor beam fits and residuals.
M2_radius_plot(z, d, lambda0[, strict, z0, d0])	Plot radii, beam fits, and asymptotes.
M2_focus_plot(w0, lambda0, f, z0[, M2])	Plot a beam from its waist through a lens to its focus.