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Back surface optical coupling superconducting nanowire single-photon detector, preparation device and testing device

A technology of single photon detector and superconducting nanowire, which is applied in the field of light detection, to achieve the effect of reducing alignment error, reducing random spot shift, and self-aligning optical coupling with high stability

Pending Publication Date: 2020-01-24
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0008] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a backside optically coupled superconducting nanowire single photon detection device, preparation and testing device, which is used to solve the problems in the prior art in the backside optically coupled superconducting nanowire The above-mentioned series of problems existing in the optical coupling of line single photon detection devices

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  • Back surface optical coupling superconducting nanowire single-photon detector, preparation device and testing device
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  • Back surface optical coupling superconducting nanowire single-photon detector, preparation device and testing device

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[0052] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0053] see Figure 1 to Figure 7 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...

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Abstract

The invention provides a back surface optical coupling superconducting nanowire single-photon detector, a preparation device and a testing device. The back surface optical coupling superconducting nanowire single-photon detector comprises a device photosensitive area and a positioning ring. The testing device comprises a packaging part and a sleeve, wherein the back surface optical coupling superconducting nanowire single-photon detector is fixed in the packaging part and is connected with the packaging part and an optical fiber plug through the sleeve, so that the center of the optical fiberplug and the center of the back surface optical coupling superconducting nanowire single-photon detector are positioned on the same vertical line. The back surface optical coupling superconducting nanowire single-photon detector with the special appearance is prepared and matched with the testing device for application, so that high-stability self-alignment optical coupling is realized; and furthermore, the light error can be directly quantified in combination with an optical microscope by using a marking scale with the level of micron, so that the light error is controlled to be in the levelof micron.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and relates to a single-photon detection device, a preparation and a testing device for a back optically coupled superconducting nanowire. Background technique [0002] Superconducting nanowire single photon detector (Superconducting nanowire single photon detector, SNSPD) is a new type of single photon detection technology developed in the past ten years. Its biggest advantage over semiconductor detectors is its ultra-high detection efficiency and fast response. speed with negligible dark counts, and a spectral response spanning visible to infrared. In 2001, the Gol'tsman group of Moscow Normal University first prepared a 200nm-wide superconducting nanowire by using a 5nm-thick NbN ultra-thin film, successfully realized single-photon detection from visible light to near-infrared, and opened the single-photon detection of superconducting nanowires. The first of its kind in photon detec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
CPCG01J11/00
Inventor 李浩周后荣尤立星王镇
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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