摘要:
A nitride semiconductor laser element has a first nitride semiconductor layer, an active layer, a second nitride semiconductor layer, and a first protective film in contact with a cavity end face of the nitride semiconductor layer, wherein the first protective film in contact with at least the active layer of the cavity end face has a region thinner than the maximum thickness of the first protective film.
摘要:
A nitride semiconductor laser element includes a nitride semiconductor layer of a first conduction type, an active layer, and a nitride semiconductor layer of a second conduction type that is different from the first conduction type are laminated in that order, a cavity end face formed by the nitride semiconductor layers, and a protective film formed on the cavity end face. The nitride semiconductor layers of the first and second conduction types have layers containing Al, and the active layer has layer containing In. The protective film has a region in which an axial orientation of crystals is the same as that of the cavity end face on the nitride semiconductor layers of the first and second conduction types, and has another region in which an axial orientation of crystals is different from that of the cavity end face on the active layer.
摘要:
A nitride semiconductor laser element, comprises; nitride semiconductor layers in which a nitride semiconductor layer of a first conduction type, an active layer, and a nitride semiconductor layer of a second conduction type that is different from the first conduction type are laminated in that order; a cavity end face formed by the nitride semiconductor layers; and a protective film formed on the cavity end face, the protective film has a region in which an axial orientation of crystals is different in the direction of lamination of the nitride semiconductor layers.
摘要:
The present invention provides a nitride semiconductor laser element, comprising: a nitride semiconductor structure having a first nitride semiconductor layer, a second nitride semiconductor layer, and an active layer provided between the first and second nitride semiconductor layers; a cavity end face provided to the nitride semiconductor structure; and a protective film having a hexagonal crystal structure, and having a first region provided on a first crystal surface of the nitride semiconductor structure in the cavity end face and a second region provided on a second crystal surface in the surface of at least one of the first and second nitride semiconductor layer, the first and second regions of the protective film are oriented in the same axial direction as that of the respective first and second crystal surfaces.
摘要:
A nitride semiconductor laser element comprises; a nitride semiconductor layer that includes a first nitride semiconductor layer, an active layer, and a second nitride semiconductor layer, and that has a cavity with end faces, and a protective film formed on at least one end face of the cavity, wherein the protective film is formed of a first film with a crystal structure that has the same axial orientation as that of the nitride semiconductor layer constituting the end face of the cavity, and a second film with a crystal structure that has a different axial orientation from that of the first film, in this order from the side of the end face.
摘要:
A nitride semiconductor laser element, comprises; nitride semiconductor layers in which a nitride semiconductor layer of a first conduction type, an active layer, and a nitride semiconductor layer of a second conduction type that is different from the first conduction type are laminated in that order; a cavity end face formed by the nitride semiconductor layers; and a protective film formed on the cavity end face, the protective film has a region in which an axial orientation of crystals is different in the direction of lamination of the nitride semiconductor layers.
摘要:
A nitride semiconductor laser element comprises; a nitride semiconductor layer that includes a first nitride semiconductor layer, an active layer, and a second nitride semiconductor layer, and that has a cavity with end faces, and a protective film formed on at least one end face of the cavity, wherein the protective film is formed of a first film with a crystal structure that has the same axial orientation as that of the nitride semiconductor layer constituting the end face of the cavity, and a second film with a crystal structure that has a different axial orientation from that of the first film, in this order from the side of the end face.
摘要:
A nitride semiconductor laser element, has: a nitride semiconductor layer including a first nitride semiconductor layer, an active layer, and a second nitride semiconductor layer laminated in that order; and resonator end faces formed mutually opposing at the end of said nitride semiconductor layers, wherein an impurity is contained in at least an optical output region of the resonator end faces, with the concentration of said impurity having a concentration distribution that is asymmetric in reference to a peak position, in the lamination direction of the nitride semiconductor layers, and said optical output region has a wider bandgap than other regions in the active layer or said optical output region has a higher impurity concentration than other regions in the active layer.
摘要:
A nitride semiconductor laser element, has: a nitride semiconductor layer comprising a first nitride semiconductor layer, an active layer, and a second nitride semiconductor layer laminated in that order; and resonator end faces formed mutually opposing at the end of said nitride semiconductor layers, wherein an impurity is contained in at least an optical output region of the resonator end faces, with the concentration of said impurity having a concentration distribution that is asymmetric in reference to a peak position, in the lamination direction of the nitride semiconductor layers, and said optical output region has a wider bandgap than other regions in the active layer or said optical output region has a higher impurity concentration than other regions in the active layer.
摘要:
To provide a ridge-type semiconductor laser element capable of preventing inclination at the time of junction-down bonding and having high heat dissipation, in a semiconductor laser element including a substrate, a semiconductor portion disposed on the substrate and having a ridge on a surface at an opposite side from the substrate, an electrode disposed on a ridge, an insulating layer disposed on the semiconductor portion at the both sides of the ridge and a pad electrode disposed on the electrode, in which, the pad electrode side is a mounting surface side, the pad electrode is disposed extending on the insulating layer, and a spacer is disposed between the semiconductor portion and the pad electrode at parts spaced apart from the ridge.