  In-bulk processing of materials by laser radiation has largely evolved over
the last decades and still opensup new scientific and industrial potentials.
The development of any in-bulk processing application relieson the knowledge of
laser propagation and especially the volumetric field distribution near the
focus.Many commercial programs can simulate this, but, in order to adapt them,
or to develop new methods,one usually needs to create a specific software.
Besides, most of the time people also need to measurethe actual field
distribution near the focus to evaluate their assumptions in the simulation. To
easily get access to this knowledge, we present our high-precision field
distribution measuring method and release our in-house software InFocus, under
the Creative Commons 4.0 License. Our measurementsprovide 300-nm longitudinal
resolution and diffraction limited lateral resolution. The in-house
softwareallows fast vectorial analysis of the focused volumetric field
distribution in the bulk. The simulationsof light propagation under different
conditions (focusing optics, wavelength, spatial shape, propagationmedium) are
in excellent agreement with propagation imaging experiments. The aberrations
provoked by the refractive index mismatch as well as those induced by the
focusing optics are both taken into account.The results indicate that our
proposed model is suitable for the precise evaluation of energy deposition
