Patent ID: 6337873
Filing Date: 2002-01-08
Classification: G02B,H01S

Abstract:
An optical arrangement for balancing the beam of one or more high-power diode lasers, arranged one above another, for the purpose of focusing at a point, comprising:a high-power diode laser having a plurality of emitters or emitter groups arranged in a row; a first cylindrical lens arranged downstream of each row for collimating the beam of the emitters or emitter groups in a direction of a fast axis of the pn junction of the emitters; a direction element with a number of different segments equal to the number of emitters or emitter groups, which deflect the beams in the direction of the fast axis by diffraction, refraction or reflection; means for collimating the beams in the direction of the slow axis perpendicular to the pn junction of the emitters; a lens focusing the entire beam at a point, the focus being situated on the optical axis, which is defined as the perpendicular to the direction of the slow axis and the fast axis; said means for collimating the beams in the direction perpendicular of the slow axis to the pn junction being a single second cylindrical lens; segments of the direction element deflecting the beams in the direction of the slow axis relative to one another in each case such that their principal rays overlap with the optical axis at a distance A from the direction element in the direction perpendicular to the pn junction and being arranged one above another at equal distances in the direction of the pn junction; and a redirection element being arranged downstream at the distance A from each direction element which deflects the beams such that they run parallel to one another.