TM mode (P-polarization) of EM wave at oblique incidence at an interface between two media

oblique-incidence-TM-Mode.tex

% Oblique Incidence  - TM Mode (P-Polarization)
% Author: Jimmy Touma (10/27/2016)
%
% Adapted from:
%                 Edgar Fuentes (Club de LaTeX UC member) 
%                 http://www.texample.net/tikz/examples/oblique-incidence/

\documentclass{article}


\usepackage{tikz}
\usetikzlibrary{%
    decorations.pathreplacing,%
    decorations.pathmorphing%
}
\usepackage{verbatim}

\begin{comment}
:Title: Oblique Incidence of TM Waves
:Tags: Decorations, Physics, Chemistry, & Optics

Reflection and refraction of electromagnetic TM-polarized wave incident obliquely at plane interface. 

:Author: `Jimmy Touma`_

.. _Jimmy Touma: https://gist.github.com/aitatanit/ff9eada5a51f946fc9941c6bfbdcb69a

\end{comment}


\begin{document}
\pagestyle{empty}

\begin{tikzpicture}[
    media/.style={font={\footnotesize\sffamily}},
    wave/.style={
        decorate,decoration={snake,post length=1.4mm,amplitude=2mm,
        segment length=2mm},thick},
    interface/.style={
        % The border decoration is a path replacing decorator. 
        % For the interface style we want to draw the original path.
        % The postaction option is therefore used to ensure that the
        % border decoration is drawn *after* the original path.
        postaction={draw,decorate,decoration={border,angle=-45,
                    amplitude=0.3cm,segment length=2mm}}},
    ]
    % Round rectangle
    \fill[gray!10,rounded corners] (0,-4) rectangle (4,4);
    
    % Interface
    \draw[blue,line width=.5pt,interface](0,-4)--(0,4);
    
    % horizontal dashed line
    \draw[dashed,gray](-4,0)--(4,0);
    
    % Coordinates system
    \draw(-0.15,-0.15)node[below]{$y$};
    \draw[<->,line width=1pt] (2,0) node[below]{$z$}-|(0,2) node[left]{$x$};
    
    % Incidence
    \draw[->,wave]
         (225:3.9cm)--(225:3.2cm)node[above]{$k_i$};
    \draw[gray](0:0cm)--(225:3cm);
    \path (0,0)++(205:1cm)node{$\phi_i$};
    \draw[->](-0.75,0)arc(180:225:.75cm);
    
    \filldraw[fill=white,line width=1pt](-1.3,-1.3)circle(.15cm);
        \filldraw[fill=black,line width=1pt](-1.3,-1.3)circle(.05cm);
    
    \draw[->] (-1.3,-1.3)
    +(-45:0cm) -- +(135:1cm)node[left]{$\vec{E_i}$};
    
        \draw(-1.3,-1.4)node[below]{$\vec{B_i}$};

    
    
    % Reflection
    \draw[->,wave]
    (135:3.2cm)--(135:3.9cm)node[above]{$k_r$};
    \path (0,0)++(155:1.3cm) node{$\phi_r$};
    \draw[gray](0:0cm)--(135:3cm);
    \draw[->] (-1,0)arc(180:135:1cm);
    
    
    \filldraw[fill=white,line width=1pt](-1.3,1.3)circle(.15cm);
    \filldraw[fill=black,line width=1pt](-1.3,1.3)circle(.05cm);
    
    
    
    \draw[->] (-1.13,1.3)
    +(135:.12cm) -- +(215:1cm)node[above]{$\vec{E_r}$};
    
    \draw(-1.2,1.3)node[right]{$\vec{B_r}$};

    
    
    
    
    % Transmission
    \draw[->,wave]
         (30:3.1cm)--(30:3.9cm)node[right]{$k_t$};
    \draw[gray](0:0cm)--(30:3cm);
    \path (0,0)++(15:1.3cm)node{$\phi_t$};
    \draw[->] (1,0) arc (0:30:1cm);
    
    \filldraw[fill=white,line width=1pt](1.6,0.9)circle(.15cm);
   
    
    \draw[->] (1.6,0.9)
    +(-30:0cm) -- +(120:1cm)node[right]{$\vec{E_t}$};
    
    \draw(1.7,0.8)node[right]{$\vec{B_t}$};

    
    
    % Media names
    \path[media] (-0.5,-3.5)  node {$n_1$}
                 (0.6,-3.5) node {$n_2$};

    % $y$ axis
     \filldraw[fill=white,line width=1pt](0,0)circle(.15cm);
     \filldraw[fill=black,line width=1pt](0,0)circle(.05cm);
    % Interface pointer
    \draw[-latex,thick](-0.5,4)node[left]{$\mathsf{S_{1,2}}$}
         to[out=0,in=90] (0,3.5);
    % To-paths are really useful for drawing curved lines. The above
    % to path is equal to:
    %
    % \draw[-latex,thick](3.2,0.5)node[right]{$\mathsf{S_{1,2}}$}
    %      ..controls +(180:.2cm) and +(up:0.25cm) .. (3,0);
    % Internally the to path is translated to a similar bezier curve,
    % but the to path syntax hides the complexity from the user. 
\end{tikzpicture}


\end{document}