Patent ID: 7397832
Filing Date: 2008-07-08
Classification: H01S

Abstract:
1. A pumping method of discrete-elements solid state laser systems pumped by semiconductor laser diodes, the method comprising sending a pump beam having a pump power greater than 10 W through an active medium that includes a first face to be crossed by the pump beam, and a second face to be crossed by the pump beam along a pumping axis being associated to the pump beam, the active medium being inserted in a laser cavity having a cavity propagation axis, wherein the pumping axis coincides with the cavity propagation axis inside the active medium, and is perpendicular to an optical surface met by the pump beam after crossing the first face of the active medium, wherein the optical surface is partially reflecting at a wavelength of the pump beam and non reflecting at a wavelength at which a laser beam propagates in the laser cavity; wherein the pump beam is focused in a volume of the active medium between the first face of the active medium and two thirds of a length starting from the first face (area I), so that a strongly divergent radiation meets the second face of the active medium.