Fiber & Lasers
Fiber Numerical Aperture (NA)
Convert between NA and acceptance angle (single-mode about 0.13, multimode about 0.22).
NA = sin(θ_half)
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.