摘要:
A semiconductor laser device capable of flexibly coping even with a case where a large output power difference is required between a plurality of laser elements having different lasing wavelengths when reproducing white light is obtained. This semiconductor laser device (100) includes a red semiconductor laser element (10) having one or a plurality of laser beam emitting portions, a green semiconductor laser element (30) having one or a plurality of laser beam emitting portions, and a blue semiconductor laser element (50) having one or a plurality of laser beam emitting portions. At least two semiconductor laser elements among the red semiconductor laser element, the green semiconductor laser element and the blue semiconductor laser element have such a relation that the number of the laser beam emitting portions of the semiconductor laser element emitting a relatively long wavelength is larger than the number of the laser beam emitting portions of the semiconductor laser element emitting a relatively short wavelength.
摘要:
This semiconductor laser device includes a substrate, a blue semiconductor laser element, formed on the surface of a substrate, including a first active layer made of a nitride-based semiconductor and having a first major surface of a non-C plane and a green semiconductor laser element, formed on the surface of the substrate, including a second active layer made of a nitride-based semiconductor and having a second major surface of a surface orientation substantially identical to the non-C plane.
摘要:
A semiconductor laser device capable of easily obtaining a desired hue is obtained. This semiconductor laser device (100) includes a green semiconductor laser element (30) having one or a plurality of laser beam emitting portions, a blue semiconductor laser element (50) having one or a plurality of laser beam emitting portions, and a red semiconductor laser element (10) having one or a plurality of laser beam emitting portions. At least two semiconductor laser elements among the green semiconductor laser element, the blue semiconductor laser element and the red semiconductor laser element have such a relation that the number of the laser beam emitting portions of the semiconductor laser element whose total output power is relatively small is larger than the number of the laser beam emitting portions of the semiconductor laser element, having a plurality of laser beam emitting portions, whose total output power is relatively large, or the number of the semiconductor laser element, having one laser beam emitting portion, whose output power is relatively large.
摘要:
A semiconductor laser diode apparatus capable of suppressing variation in an emission position and an emission direction of a laser beam emitted from a semiconductor laser diode element is obtained. This semiconductor laser diode apparatus includes a semiconductor laser diode element having warping along either a first direction in which a cavity extends or a second direction intersecting with the first direction and a base on which a convex side of the warping of the semiconductor laser diode element is fixed, wherein a distance between a first end of the semiconductor laser diode element in a direction of larger warping among the first and second directions and the base is smaller than a distance between a second end of the semiconductor laser diode element in the direction of the large warping among the first and second directions and the base.
摘要:
One facet of a nitride based semiconductor laser device is composed of a cleavage plane of (0001), and the other facet thereof is composed of a cleavage plane of (000 1). Thus, the one facet and the other facet are respectively a Ga polar plane and an N polar plane. A portion of the one facet and a portion of the other facet, which are positioned in an optical waveguide, constitute a pair of cavity facets. A first protective film including nitrogen as a constituent element is formed on the one facet. A second protective film including oxygen as a constituent element is formed on the other facet.
摘要:
One facet and the other facet of a nitride based semiconductor laser device are respectively composed of a cleavage plane of (0001) and a cleavage plane of (000 1). Thus, the one facet and the other facet are respectively a Ga polar plane and an N polar plane. A portion of the one facet and a portion of the other facet, which are positioned in an optical waveguide, constitute a pair of cavity facets. A first protective film including oxygen as a constituent element is formed on the one facet. A second protective film including nitrogen as a constituent element is formed on the other facet.
摘要:
In a semiconductor laser device, a semiconductor laser element is so fixed to a base that a distance between a convex side of a warp of the semiconductor laser element and the base varies with the warp of the semiconductor laser element along a first direction corresponding to an extensional direction of a cavity while a wire bonding portion is provided around a portion of an electrode layer corresponding to the vicinity of a region where the distance is the largest.
摘要:
A semiconductor laser device capable of reducing the threshold current and improving luminous efficiency and a method of fabricating the same are obtained. This semiconductor laser device comprises a semiconductor substrate having a principal surface and a semiconductor element layer, formed on the principal surface of the semiconductor substrate, having a principal surface substantially inclined with respect to the principal surface of the semiconductor substrate and including an emission layer.
摘要:
A monolithic red/infrared semiconductor laser device is joined to a blue-violet semiconductor laser device. The distance between a blue-violet emission point in the blue-violet semiconductor laser device and an infrared emission point in an infrared semiconductor laser device is significantly shorter than the distance between a red emission point in a red semiconductor laser device and the infrared emission point. A blue-violet laser beam, a red laser beam, and an infrared laser beam respectively emitted from the blue-violet emission point, the red emission point, and the infrared emission point are introduced into a photodetector after being incident on an optical disk by an optical system comprising a polarizing beam splitter, a collimator lens, a beam expander, a λ/4 plate, an objective lens, a cylindrical lens, and an optical axis correction element.
摘要:
One facet of a nitride based semiconductor laser device is composed of a cleavage plane of (0001), and the other facet thereof is composed of a cleavage plane of (000 1). Thus, the one facet and the other facet are respectively a Ga polar plane and an N polar plane. A portion of the one facet and a portion of the other facet, which are positioned in an optical waveguide, constitute a pair of cavity facets. A first protective film including nitrogen as a constituent element is formed on the one facet. A second protective film including oxygen as a constituent element is formed on the other facet.