Integrated IR and visible detector

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation

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257442, 257451, H01L 2714, H01L 3100

Patent

active

053731824

ABSTRACT:
A radiation detector (1) includes a multi-layered substrate (2,10) having a first major surface, which is a radiation receiving surface, and a second major surface disposed opposite to the first major surface. A first detector is formed adjacent to the first major surface, the first detector being responsive to a wavelength or wavelengths of electromagnetic radiation in the range of approximately 0.3 micrometers (near-UV) to approximately 1.2 micrometers (near-IR). A second detector is formed adjacent to the second major surface of the multi-layered substrate, the second detector being responsive to a wavelength or wavelengths of electromagnetic radiation in the range of approximately one micrometer to approximately twenty micrometers (SWIR to VLWIR). In a presently preferred embodiment the second detector is simultaneously responsive to IR radiation within two distinct spectral bands.

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patent: 4994664 (1991-02-01), Veldkamp
patent: 5132251 (1992-07-01), Kim et al.
patent: 5149956 (1992-09-01), Norton
"Optical Design with Diffractive Lenses" by D. Falkis and G. M. Morris, Photonics Spectra, Nov. 1991, pp. 205-208.
"Binary Optics", by W. B. Veldkamp and T. J. McHugh, Scientific American, May 1992, pp. 92-97.
"Coherent Addition of AlGaAs Lasers Using microlenses and Diffractive Coupling" by J. R. Leger et al., Appl. Phys. Lett. 52(21), May 23, 1988, pp. 1771-1772.
"Coherent Laser Beam Addition: An Application of Binary-Optics Technology" by J. R. Leger et al., The Lincoln Laboratory Journal, vol. 1, No. 2, 1988 pp. 225-245.

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