Long wavelength, vertical cavity surface emitting laser with vertically integrated optical pump
First Claim
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1. An optical device, comprising:
- a first vertical cavity surface emitting laser (VCSEL), said first VCSEL having a long wavelength active medium interposed between a first mirror and a second mirror, said first VCSEL emitting radiation at a first wavelength; and
a second VCSEL integral with said first VCSEL, said second VCSEL electrically pumped and emitting radiation at a second wavelength, said second wavelength shorter than said first wavelength, wherein said second VCSEL optically pumps said first VCSEL.
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Abstract
A long wavelength VCSEL according to the present invention is optically coupled to and optically pumped by a shorter wavelength, electrically pumped VCSEL. Short wavelength radiation emitted from the top surface of the underlying VCSEL is transmitted through the lower mirror of the long wavelength VCSEL. Long wavelength radiation is preferably emitted from the top surface of the long wavelength VCSEL. The two VCSELs are preferably joined together using a transparent optical adhesive, a wafer-fusing process, or a metal to metal bond.
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Citations
22 Claims
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1. An optical device, comprising:
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a first vertical cavity surface emitting laser (VCSEL), said first VCSEL having a long wavelength active medium interposed between a first mirror and a second mirror, said first VCSEL emitting radiation at a first wavelength; and a second VCSEL integral with said first VCSEL, said second VCSEL electrically pumped and emitting radiation at a second wavelength, said second wavelength shorter than said first wavelength, wherein said second VCSEL optically pumps said first VCSEL. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An optical device, comprising:
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a first array of vertical cavity surface emitting lasers (VCSELs), said VCSELs of said first array having a long wavelength active medium interposed between a first mirror and a second mirror, said VCSELs of said first array emitting radiation at a first wavelength; and a second array of VCSELs integral with said first array of VCSELS, said VCSELs of said second array electrically pumped and emitting radiation at a second wavelength, said second wavelength shorter than said first wavelength, wherein said second array optically pumps said first array.
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22. A method of stimulating emission in a first vertical cavity surface emitting laser (VCSEL) causing radiation at a first wavelength to be emitted by said first VCSEL, said method comprising injecting radiation into said first VCSEL at a second wavelength with a second VCSEL integral with said first VCSEL, said second wavelength shorter than said first wavelength.
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