ss="nn">np</span>
<span class="kn">from</span> <span class="nn">scipy.constants</span> <span class="kn">import</span> <span class="n">c</span>
<span class="kn">from</span> <span class="nn">layerlumos.utils</span> <span class="kn">import</span> <span class="n">load_material</span><span class="p">,</span> <span class="n">interpolate_material</span>
<span class="kn">from</span> <span class="nn">layerlumos.layerlumos</span> <span class="kn">import</span> <span class="n">stackrt</span><span class="p">,</span> <s