Wavelength conversion device with avalanche multiplier

Details Wavelength conversion device with avalanche multiplier Wavelength conversion device with avalanche multiplier

2006-07-18

2006-07-18

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

C359S344000

Reexamination Certificate

active

07079307

ABSTRACT:
A wavelength conversion device includes a photodetector for generating a photocurrent in response to the detection of radiation at a first wavelength. An avalanche multiplier amplifies the signal photocurrent and feeds this to a light emitting element that produces radiation at a second wavelength shorter than the first wavelength and corresponding to the detected radiation at the first wavelength. The components are assembled together in an integrated stacked arrangement either by epitaxial growth or wafer fusion of the individual components. The device is useful as an image intensifier or thermal imaging device.

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patent: 6563627 (2003-05-01), Yoo
patent: 6768827 (2004-07-01), Yoo
patent: 6819476 (2004-11-01), Hunt

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