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

1996-12-18

1998-08-25

Shafer, Ricky D.

Optical: systems and elements

Prism

359615, 359618, 359837, 359639, 359333, 359349, 359900, 372 75, 372 70, 372108, G02B 504, G02B 718, G02B 2710, G02B 2712

Patent

active

057988773

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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