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US 2015/0092805 A1Published application
Semiconductor laser device
AssigneeMitsubishi Electric Corporation
InventorHiroshi Mitsuyama
Life of this patent
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Abstract
A semiconductor laser device includes a semiconductor laser element having an active layer and semiconductor layers on opposite sides of the active layer, and a PN-junction diode in part of the semiconductor layers. The PN-junction diode is connected, in inverse polarity, in parallel with the semiconductor laser element.
Claims6
A semiconductor laser device comprising:
- a semiconductor laser element having an active layer and a plurality of semiconductor layers located on opposite sides of the active layer;
- and
- a PN-junction diode located in part of the plurality of semiconductor layers, wherein the PN-junction diode is connected, in inverse polarity, in parallel with the semiconductor laser element.
A semiconductor laser device comprising:
- a sub mount having an insulating member and a surface metal layer on the insulating member;
- a semiconductor laser element having an upper surface electrode and a lower surface electrode, the lower surface electrode being connected to the surface metal layer;
- a capacitor having a first electrode and a second electrode and disposed on the semiconductor laser element;
- and
- a wire connecting the first electrode and the surface metal layer to each other, whereby the second electrode is connected to the upper surface electrode.
2 more elements
A semiconductor laser device comprising:
- a metal plate;
- a sub mount having a dielectric, a first metal and a second metal on an upper surface side of the dielectric, and a third metal located on a lower surface side of the dielectric and adjoining the metal plate;
- a semiconductor laser element having an upper surface electrode and a lower surface electrode, the lower surface electrode being connected to the first metal;
- a first wire connecting the upper surface electrode and the second metal to each other;
- and
- a second wire connecting the first metal and the metal plate to each other.
3 more elements
Dependencies are inferred from the claim text.