Sveinn: The feeble laser 10ns, 100mw pulse is the sole initiator of this if he is hitting different amount of p(o) or d(0) the correlated amount of particle current is generated.
For comparison, A laser pointer can produce a green light. *High-end:* Wicked Lasers E2 Elite Fusion <http://www.wickedlasers.com/lasers/Elite_Pro-89-37.html>. $199.00 Wavelength: 532nm. Power: 150mW.