.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/group_properties/plot_group_properties.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_gallery_group_properties_plot_group_properties.py>`
        to download the full example code

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_group_properties_plot_group_properties.py:


Group Index and Velocity of Fused Silica
=======================================

This example demonstrates how to compute and plot the group index and
group velocity of fused silica using :mod:`PyOptik`.

.. GENERATED FROM PYTHON SOURCE LINES 10-24

.. code-block:: Python

    import numpy
    import matplotlib.pyplot as plt
    from MPSPlots.styles import mps
    from PyOptik import MaterialBank
    from PyOptik.units import micrometer

    # Retrieve the material
    material = MaterialBank.fused_silica

    # Compute values over a wavelength range
    wavelengths = numpy.linspace(0.5, 1.6, 200) * micrometer
    n_g = material.compute_group_index(wavelengths)
    v_g = material.compute_group_velocity(wavelengths)








.. GENERATED FROM PYTHON SOURCE LINES 25-47

.. code-block:: Python

    with plt.style.context(mps):
        fig, ax1 = plt.subplots()

    ax1.set(
        xlabel="Wavelength [µm]",
        ylabel="Group index",
        title="Fused Silica Group Properties",
    )
    ax1.plot(wavelengths.to(micrometer).magnitude, n_g.magnitude, label="n_g")
    ax1.legend(loc="upper left")

    ax2 = ax1.twinx()
    ax2.set(ylabel="Group velocity [m/s]")
    ax2.plot(
        wavelengths.to(micrometer).magnitude,
        v_g.to("m/s").magnitude,
        color="tab:red",
        label="v_g",
    )
    ax2.legend(loc="upper right")

    plt.show()



.. image-sg:: /gallery/group_properties/images/sphx_glr_plot_group_properties_001.png
   :alt: Fused Silica Group Properties
   :srcset: /gallery/group_properties/images/sphx_glr_plot_group_properties_001.png
   :class: sphx-glr-single-img






.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.378 seconds)


.. _sphx_glr_download_gallery_group_properties_plot_group_properties.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_group_properties.ipynb <plot_group_properties.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_group_properties.py <plot_group_properties.py>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_