Compute the approximate length of a KD*P SHG crystal to be used with a 2 MW Q-switched Nd:YAG laser that has a beam diameter within the crystal of 5 mm. Assume that we want 20% conversion efficiency when properly phase-matched.
A 200 mJ Q-switched Nd:YAG laser with a pulse width of 20 ns is doubled with a 2.00 cm long KDP crystal. The beam diameter is 4 mm. What will be the approximate irradiance produced by the second harmonic assuming proper phase-matching?
For a photon with momentum p in the meridional ray shown in the figure below, calculate the momentum transferred to the sphere because of reflection in terms of the angles q0 and qi.