A light amplification device comprises a laser slab and optics for establishing an optical beam at the lasing wavelength. The beam travels inside the slab in a zig-zag path between two reflecting faces. The slab is also cooled through the reflecting faces. The slab is pumped through one or more pumping...http://www.google.fr/patents/US6134258?utm_source=gb-gplus-shareBrevet US6134258 - Transverse-pumped sLAB laser/amplifier