Patent ID: 8664735
Filing Date: 2014-03-04
Classification: G01J,H01L,Y02E

Abstract:
1. A pumped sensor system comprising: a single crystal silicon substrate; a first single crystal silicon epitaxial layer formed on the substrate, the first layer being p-doped for a first type conduction; a second single crystal silicon epitaxial layer of intrinsic silicon formed on the substrate, the second layer including a central portion n-doped for a second type conduction, whereby the first and second layers form a P/N junction silicon detector of light at an up-conversion wavelength; an epitaxial layer of ternary rare earth oxide formed on the second single crystal silicon epitaxial layer and substantially crystal lattice matched to the second single crystal silicon epitaxial layer, the ternary rare earth oxide being a crystalline bulk oxide with a controlled percentage of an up-conversion component and a majority component, the majority component being chosen to not be sensitive to any of pump, sense, or up-conversion wavelengths, the up-conversion component being selected to produce energy at the up-conversion wavelength in response to receiving energy at the pump and sense wavelengths; and the epitaxial layer of ternary rare earth oxide having a first light input area defined thereon sensitive to a pump wavelength of light and a second light input area defined thereon sensitive to a sense wavelength of light.