need to write in python spyder

Focusing a laser beam. Fundamentally light is an electromagnetic wave (a wave made up of electric and magnetic fields). Due to the wave nature of light, it is impossible to focus a laser beam down to perfectly sharp point. The best you can do is a "Gaussian beam", in which the light is focused to a spot around the size of the wavelength of the light. A Gaussian beam is useful for making "optical tweezers" which can be used to hold and move a small particle using a light beam. See the Wikipedia article Gaussian beam to get an idea of what a Gaussian beam looks like. For this problem you should make two different plots of the electric field in a Gaussian beam, a density plot and a sur- face plot. The space coordinates of both plots will be the distance perpendicular to the beam x and the distance along the beam z. The physical variable plotted is the electric field E(x, z). For the density plot make a 2D plot with E(x, z) shown by the color of the plot. For the surface plot make a 3D plot of the same data, with E(x, z) shown