pysted.base.DonutBeam.get_intensity

DonutBeam.get_intensity(power, f, n, na, transmission, datamap_pixelsize)

Compute the transmitted STED intensity field (W/m²). The technique essentially follows the method described in [Xie2013], where \(z = 0\), along with some equations from [Deng2010], and [RPPhoto2015].

Parameters:

• power – The power of the beam (W).

• f – The focal length of the objective (m).

• n – The refractive index of the objective.

• na – The numerical aperture.

• transmission – The transmission ratio of the objective (given the wavelength of the STED beam).

• datamap_pixelsize – The size of an element in the intensity matrix (m).

Returns:

A 2D array of the instant intensity (W/m^2).