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

.. only:: html

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

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

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

.. _sphx_glr_gallery_thin_films_plot_antireflection_coating.py:


Quarter-wave antireflection coating
===================================

Design the ideal single-layer coating for an air-to-glass interface and compare
its spectrum with the uncoated substrate.

.. GENERATED FROM PYTHON SOURCE LINES 10-34

.. code-block:: Python

    import matplotlib.pyplot as plt
    import numpy
    from TypedUnit import ureg

    from PyOptik import ThinFilmLayer, thin_film_stack


    design_wavelength = 550 * ureg.nanometer
    substrate_index = 1.52
    coating_index = numpy.sqrt(substrate_index)
    coating_thickness = design_wavelength / (4 * coating_index)
    wavelengths = numpy.linspace(350, 900, 600) * ureg.nanometer

    uncoated = thin_film_stack(
        wavelengths,
        [],
        substrate_index=substrate_index,
    )
    coated = thin_film_stack(
        wavelengths,
        [ThinFilmLayer(coating_index, coating_thickness)],
        substrate_index=substrate_index,
    )








.. GENERATED FROM PYTHON SOURCE LINES 35-47

.. code-block:: Python

    figure, axis = plt.subplots(layout="constrained")
    axis.plot(wavelengths.magnitude, 100 * uncoated.reflectance, label="Uncoated glass")
    axis.plot(wavelengths.magnitude, 100 * coated.reflectance, label="Quarter-wave coating")
    axis.axvline(design_wavelength.magnitude, color="black", linestyle="--", alpha=0.6)
    axis.set(
        xlabel="Wavelength [nm]",
        ylabel="Reflectance [%]",
        title="Single-layer antireflection coating",
    )
    axis.grid(alpha=0.25)
    axis.legend()
    plt.show()



.. image-sg:: /gallery/thin_films/images/sphx_glr_plot_antireflection_coating_001.png
   :alt: Single-layer antireflection coating
   :srcset: /gallery/thin_films/images/sphx_glr_plot_antireflection_coating_001.png
   :class: sphx-glr-single-img






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

   **Total running time of the script:** (0 minutes 0.343 seconds)


.. _sphx_glr_download_gallery_thin_films_plot_antireflection_coating.py:

.. only:: html

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

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

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

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

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


.. only:: html

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

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