Detachable high-speed optoelectronic sampling head
AssigneeUniversity of Illinois Foundation
InventorHenry Merkelo
Life of this patent
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Abstract
A detachable high-speed optoelectronic sampling head for use with an electron multiplier includes a housing having an evacuated chamber with a pair of transparent windows. Light to be detected is directed to the first window to a photoemissive strip spaced from a ground plane. The photoemissive strip comprises a microstrip, and the housing has high frequency feedthrough means for applying sampling potentials between said photoemissive strip and ground plane. A phosphor layer is provided on the other window in the chamber, and photoelectrons emitted from the photoemissive strip are directed through the ground plane to the phosphor layer.
Claims11
A high-speed optoelectronic sampling head comprising a detachable housing for use with a photo amplifying device, said housing defining an evacuated chamber, a photoemissive strip fixedly mounted in said chamber, a ground plane fixedly mounted in said chamber spaced from said photoemissive strip and defining a microstrip ground plane for said photoemissive strip, feedthrough means extending through a wall of said housing for propagating a high-speed sampling potential difference between said photoemissive strip and said ground plane, a phosphor layer in said chamber positioned to receive photoelectrons emitted from said photoemissive strip, said housing having a first window positioned to direct light to be detected to said photoemissive strip, and a second window transparent to phosphorescent light from said phosphor layer for directing said phosphorescent light from said chamber externally of said housing.
A high-speed optoelectronic sampling head comprising a detachable housing for use with a photo amplifying device, said housing member having a hole extending between first and second faces, a transparent window at each end of said hole sealed to said housing, for defining an evacuated chamber in said housing, first and second mounting holes aligned with each other and extending through opposite sides of said housing normal to the axis of said first-mentioned hole, adapter means sealed in said mounting holes and extending into said chamber, a microstrip ground plane mounted on said adapter means in said chamber, means mounting a photoemissive strip adjacent said ground plane in said chamber, whereby said photoemissive strip comprises a microstrip, said microstrip being positioned to receive light to be detected from said first window, means propagating an electropotential between said photoemissive strip and said ground plane, a phosphor layer on said second window in said chamber, said photoemissive strip being positioned to direct photoelectrons emitted therefrom through said ground plane to said phosphor layer.
A high-speed optoelectronic sampling head comprising a detachable housing for use with a photo amplifying device, said housing defining an evacuated chamber having first and second transparent windows, a conductive mesh supported in said chamber, a photoemissive strip positioned in said chamber spaced from said mesh whereby light to be detected passes through said first window and falls upon said photoemissive strip to result in the production of photoelectrons, a phosphor layer on said second window in said chamber, said phosphor layer positioned to receive photoelectrons from said photoemissive strip passing through said mesh, and high-frequency insulating means in the wall of said housing for applying sampling potential between said photoemissive strip and said mesh, said photoemissive strip comprising a microstrip and said mesh comprising a ground plane for said microstrip, whereby said sampling potential propagates between said photoemissive strip and mesh.
Dependencies are inferred from the claim text.