Laser source

A laser source comprising at least:

• a pumping system for generating at least one pump beam;
• and
• an active element which comprises an elongate rod provided with a doped matrix capable of absorbing pump rays of said pump beam in order to amplify a laser radiation and at least one optical block placed on one side of said rod in order to guide the pump rays toward said rod, wherein:
• said pumping system is formed so as to generate a plurality of said pump rays which are mutually parallel and distributed transversely to said active element, facing at least one entry face of said at least one optical block,
• said entry face of the at least one optical block is, at least partly, inclined with respect to the longitudinal axis (X—X) of said rod and is, at least partly, non-orthogonal to the pump rays generated by and received from the pumping system in order to deflect, by refraction, said pump rays so as to transmit them into toward said rod, and
• the inclination (θ) of said entry face is such that it deflects the pump rays received from the pumping system in such a way that these rays reach said rod so that they are distributed over its entire length (L).