Optical system with laser pulse energy control

摘要: An optical system with feedback control of the pulse energy an attenuated laser output by having a laser, attenuators, and servo subsystem. The attenuators include beam attenuator module within loop for variable adjustment attenuation, plurality light absorbing filters outside which can be selectively switched into or out path further attentuation known fixed amounts. A Brewster window, photodiode associated electronics sample following module, deliver signal to microprocessor. microprocessor compares used input desired energy, then causes adjust amount attenuation so that is maintained about five percent energy.