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US 6,647,050 B2Granted
Flip-chip assembly for optically-pumped lasers
AssigneeAgilent Technologies, Inc.
InventorsAlbert T. Yuen, Michael R. T. Tan, Dubravko Ivan Babic, Scott William Corzine
Life of this patent
Estimating the term…
Abstract
A short-wavelength vertical cavity surface emitting laser (VCSEL) is flip-chip bonded to a long-wavelength VCSEL. The short-wavelength VCSEL is used to optically-pump the long-wavelength VCSEL. Certain embodiments of the invention can serve as optical sources for optical fiber communication systems. Methods also are provided.
Claims16
A method for fabricating an optically-pumped laser, said method comprising:
- providing a short-wavelength vertical-cavity surface-emitting laser (VCSEL);
- providing a long-wavelength VCSEL, wherein at least one of the VCSELs includes a well;
- providing a solder paste;
- filling the well with the solder paste;
- heating the solder paste to a temperature above a wetting-point temperature of the solder paste;
- and
- cooling the solder paste to a temperature below the wetting-point temperature to form a solder bump, the solder bump protruding above the top of the well.
4 more elements
An optically-pumped laser comprising:
- a short-wavelength vertical cavity surface-emitting laser (VCSEL);
- a long-wavelength VCSEL, at least one of the short-wavelength VCSEL and the long-wavelength VCSEL including a well, the well being sized and shaped to receive solder paste;
- wherein the short-wavelength VCSEL is solder flip-chip bonded to the long-wavelength VCSEL with solder paste located in the well.
A method for producing an optical signal, said method comprising:
- providing a short-wavelength vertical-cavity surface-emitting laser (VCSEL) and a long-wavelength VCSEL, at least one of the short-wavelength VCSEL and the long-wavelength VCSEL including a well, the well being sized and shaped to receive solder paste wherein the short-wavelength VCSEL is solder flip-chip bonded to the short-wavelength VCSEL using solder paste arranged in the well;
- generating short-wavelength optical signals with the short-wavelength VCSEL;
- and
- propagating the short-wavelength optical signals to the long-wavelength VCSEL such that the long-wavelength VCSEL generates long-wavelength optical signals.
1 more element
An optical communication system comprising:
- an optically-pumped laser comprising:
- a short-wavelength vertical-cavity surface-emitting laser (VCSEL);
- and
- a long-wavelength VCSEL, at least one of the short-wavelength VCSEL and the long-wavelength VCSEL including a well, the well being sized and shaped to receive solder paste, wherein the short-wavelength VCSEL is solder flip-chip bonded to the long-wavelength VCSEL with solder paste located in the well;
- an optical waveguide optically communicating with the optically-pumped laser for transmitting light from the optically-pumped laser;
- and
- an optical detector optically communicating with the optical waveguide for detecting light from the waveguide.
4 more elements
Dependencies are inferred from the claim text.