Optical system for improving the symmetry of the beam emitted fr

Details Optical system for improving the symmetry of the beam emitted fr Optical system for improving the symmetry of the beam emitted fr

1994-07-12

1996-09-17

Dzierzynski, Paul M.

Optical: systems and elements

Prism

359333, 359349, 372 70, 372 75, 372108, G02B 504, H01S 300, H01S 3091, H01S 322

Patent

active

055574750

ABSTRACT:
An optical system is disclosed for improving the brightness symmetry of a beam emitted from a laser diode where the beam has a large width and a narrow height. The optical system includes a tilt plate for displacing one half of the width of the beam downwardly. A first beam steering prism functions to tilt the remaining, second half of the beam width in a plane parallel to the width dimension so that the second half travels towards the first half. A second beam steering prism is provided to tilt the second half of the beam so that its propagation axis is parallel to the propagation axis of the first half and wherein the second half is stacked above the first half. The optical system functions to improve the brightness symmetry of the beam by a factor of about five. The corrected beam can be used to improve the performance of a solid state laser which is end pumped by a broad area laser diode or a laser diode bar.

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