Patent ID: 6104741
Filing Date: 2000-08-15
Classification: G02B,H01S

Abstract:
A semiconductor laser light source comprising:first and second semiconductor lasers for emitting laser beams whose polarization planes are parallel to each other and whose divergent angles .theta.a and .theta.b in two orthogonal directions satisfy an inequality .theta.a>.theta.b;a cylindrical optical element for converging the laser beams emitted from the first and second semiconductor lasers in a direction wherein the divergent angle .theta.a selectively decreases;a polarization rotating element for controlling a polarization direction so that the polarization planes of the respective laser beams having passed through the cylindrical optical element form an angle of 90 degrees;a birefringent optical element for merging by a birefringent effect, optical paths of the respective laser beams having passed through the polarization rotating element; anda converging optical element for converging the laser beams merged by the birefringent optical element in a direction wherein the divergent angle .theta.b decreases.