\documentclass{standalone}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fourier}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}

\begin{document}

\begin{tikzpicture}
\begin{axis}[
  domain=-6:6, 
  samples=36,
  colormap={mygray}{color=(black!30) color=(black!80)},
]
\addplot3[surf, fill=white] 
  {(sin(deg(sqrt(x^2+y^2))))/(sqrt(x^2+y^2))};
\end{axis}
\end{tikzpicture}

\end{document}