Energy density or Fluence

[@BilalFazalShaikh]

Amazing, thank you

[@MrMauroCrobeddu]

So , in terms of depht ,same Energy and small spot Will penetrate more?

[@tamaraclass9380]

How did you calculate energy density ?

[@mikemurphy7148]

You measure the energy coming from you device. Fire a few shots at burn paper and measure the spot diameters. Calculate their area, then diode that into the energies. Energy density = energy / spot size area.