Light-generating device and method of fabricating same
AssigneeSeiko Epson Corporation
InventorsHideaki Iwano, Yasuji Yamazaki, Katsuhiko Teraishi
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Abstract
A quite small device producing blue light with small loss of light. The device has a laminated laser light-emitting portion and an optical waveguide for second-harmonic generation. Both light-emitting portion and waveguide are formed on the same semiconductor substrate. The waveguide takes the form of a thin laminated layer. The laser light-emitting portion and the waveguide are substantially flush with each other.
Claims20
A light-generating device comprising a laminated laser light-emitting portion for emitting laser light formed on a semiconductor substrate and an optical waveguide optically coupled to the laser light-emitting portion for receiving laser light emitted by the laser light-emitting portion and for producing light at the second harmonic of the light emitted by the laser light-emitting portion, the waveguide being formed on the substrate, the waveguide being constituted by a ridged stripe composed of a thin laminated film, the laser light-emitting portion and the waveguide being substantially flush with each other, wherein said laser light-emitting portion is a thin film of a crystal of a semiconductor consisting of Group III-V compounds, and wherein said optical waveguide for second-harmonic generation is a thin film of a crystal of a semiconductor consisting of Group II-VI compounds.
An optical memory having a light-emitting device as a light source, the light-emitting device comprising a semiconductor substrate, a laminated laser light-emitting portion consisting of a semiconductor of Group III-V compounds and formed on the substrate, and an optical waveguide, the waveguide being formed on the substrate, the waveguide consisting of a semiconductor of Group II-IV compounds, the waveguide being constituted by a ridged stripe composed of a thin laminated layer, the laser light-emitting portion and the waveguide being substantially flush with each other.
Dependencies are inferred from the claim text.