A laser system comprises an optical head, a power supply and a computer for controlling the power supply. The optical head comprises a pair of mirrors and four pumping sections. Each pumping section comprises a pair of gas discharge lamps pumping an Nd:YAG laser element. The power supply provides the...http://www.google.fr/patents/US5434880?utm_source=gb-gplus-shareBrevet US5434880 - Laser system