Patent ID: 7505499

Claim:
A slab laser amplifier with parasitic oscillation suppression, comprising: a plurality of angled pump faces arranged according to a polygonal geometry, said pump faces related to one another in order to decrease likelihood of parasitic oscillations, with internal beam incidence angles at total internal reflection that alleviate need for reflective coatings, including (1) an end face opposite from least one: (a) beam entry face; or (b) beam exit face; and (2) (a) a first main face of gain material comprising said amplifier and abutting the end face; and (b) a second main face of gain material comprising said amplifier and abutting the end face, wherein said first main face and said second main face are flat, side-pumped main faces and an entirety of the first main face is angled with respect to an entirety of the second main face, thereby ensuring that the first main face and the second main face are never parallel to one another.