Semiconductor laser module
AssigneePantec Engineering AG
InventorsArne Heinrich, Clemens Hagen
Life of this patent
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Abstract
A semiconductor laser module comprises a tapered laser diode and/or a tapered amplifier diode equipped with beam shaping optics. The tapered laser diode and/or the tapered amplifier diode includes an emission facet for emitting a laser beam along a beam axis. The beam-shaping optics comprise a plano-convex cylindrical lens oriented so as to change divergence of the beam in the fast axis direction, the plano-convex spherical cylindrical lens having a planar surface arranged facing the facet and a circular cylindrical surface facing away from the facet. The refractive index of lens may be uniform throughout the entire lens. Alternatively, the lens may have a refractive index varying in the direction of the slow axis and/or in the direction of the fast axis.
Claims19
A semiconductor laser module, comprising
- at least one of a laser diode and an amplifier diode, including an emission facet for emitting a laser beam along a beam axis, the laser beam having a fast axis direction and a slow axis direction;
- and beam shaping optics;
- wherein the beam-shaping optics comprise a plano-convex cylindrical lens having a planar surface arranged facing the facet, a circular cylindrical surface facing away from the facet, a cylinder axis oriented substantially parallel to the slow axis direction and a refractive index varying, at least, in the direction of the cylinder axis, the plano-convex cylindrical lens being configured to change divergence of the laser beam both in fast axis direction and in slow axis direction.
A semiconductor laser module, comprising
- at least one of a tapered laser diode and a tapered amplifier diode, including an emission facet for emitting a laser beam along a beam axis;
- beam shaping optics;
- wherein the beam-shaping optics comprise a plano-convex cylindrical lens having a planar surface arranged facing the emission facet, a circular cylindrical surface facing away from the emission facet and a refractive index varying both in the slow axis direction and in the fast axis direction, the plano-convex cylindrical lens being configured to change divergence of the beam both in fast axis direction and in slow axis direction.
Dependencies are inferred from the claim text.