SPAD Single-Photon Detection
Photon Energy & Count
Convert between average optical power and the number of photons arriving within an integration window.
E_ph = hc/λ, N = P·t / E_ph
Fill the inputs from a real part
Every number is read from that part's datasheet entry: peak power and pulse energy as rated, pulse width at the part's rated maximum.
Solve for
Inputs
Result
Live diagram
Drawn from the values above, redrawn as you type - the same physical schematic the mini-program shows.