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公开(公告)号：US5009488A
公开(公告)日：1991-04-23
申请号：US538116
申请日：1990-06-14
Applicant: Fredric S. Fay , Kevin E. Fogarty , Cyril Rodgers
Inventor： Fredric S. Fay , Kevin E. Fogarty , Cyril Rodgers
CPC classification number: G01N21/6458 , G02B21/06 , G02B26/007 , G01J2001/442 , G01J2001/4453 , G01J2003/123 , G01N2021/6421 , G01N2021/6423 , G01N21/6428 , G01N2201/126
Abstract: A microscope is modified to allow for precise imaging of samples using different filters at different focal planes under computer control. A filter accessory includes a filter disc having bandpass filters. The filter disc may be rotated to move a selected filter into the optical path between a light source and the microscope sample. Adjustment of the image plane of the microscope is controlled by the computer using feedback from a lens position sensor.
Abstract translation: 显微镜被修改为允许在计算机控制下在不同焦平面处使用不同滤光片的样品的精确成像。 过滤器附件包括具有带通滤波器的滤光片。 可以旋转滤光盘以将选定的滤光片移动到光源和显微镜样品之间的光路中。 显微镜的图像平面的调整由计算机使用来自透镜位置传感器的反馈来控制。
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公开(公告)号：US4959244A
公开(公告)日：1990-09-25
申请号：US329054
申请日：1989-03-27
Applicant: Carl M. Penney , Tushar S. Chande
Inventor： Carl M. Penney , Tushar S. Chande
CPC classification number: G01J5/601 , C23C16/52 , G01J2001/442 , G01J2003/2813
Abstract: The temperature of a surface undergoing a radiation assisted thermally driven process is sensed by observation of the thermal emission from that surface and used to control the process. In a preferred embodiment, the blue edge of the thermal emission spectral distribution is detected to determine the surface temperature of a workpiece during a process such as laser-assisted chemical vapor deposition, and used to control this temperature. The temperature measuring system has means for focusing workpiece thermal emission and defining the field of view, a spectrometer to separate shorter wavelength light from other spectral components of the thermal emission, and a photon-counting system to detect the shorter wavelength light and generate a surface temperature signal. Systems to determine surface temperature at a spot and along a line have an optical prism to disperse the thermal emission into component wavelengths, and a multichannel photon-counting detector comprised of an intensified photodetector array.
Abstract translation: 通过观察来自该表面的热发射并用于控制该过程来感测经历辐射辅助热驱动过程的表面的温度。 在优选实施例中，检测热发射光谱分布的蓝色边缘以在诸如激光辅助化学气相沉积的过程中确定工件的表面温度，并用于控制该温度。 温度测量系统具有用于聚焦工件热发射和限定视野的装置，用于将较短波长的光与热发射的其他光谱分量分离的光谱仪，以及用于检测较短波长的光并产生表面的光子计数系统 温度信号。 确定点和沿着线的表面温度的系统具有光学棱镜以将热辐射分散成分量波长，以及包括强化光电检测器阵列的多通道光子计数检测器。
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公开(公告)号：US4929080A
公开(公告)日：1990-05-29
申请号：US194391
申请日：1988-05-16
Applicant: Herschel Burstyn
Inventor： Herschel Burstyn
CPC classification number: G01J3/4412 , G01J9/02 , G01J2001/442 , G01J2009/0261 , G01J3/45
Abstract: An optical double-balanced quadrature mixer for analysis of optical spectra, particularly asymmetric optical spectra. Beam splitting means are used in conjunction with a quarter wavelength retardation plate to enable highly stable, accurate and precise spectral analysis. The invention is illustrated in the context of a generic light scattering test setup.
Abstract translation: 一种光学双平衡正交混频器，用于分析光谱，特别是不对称光谱。 光束分束装置与四分之一波长延迟板一起使用，以实现高度稳定，精确和精确的光谱分析。 在通用光散射测试装置的上下文中说明本发明。
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公开(公告)号：US4879468A
公开(公告)日：1989-11-07
申请号：US791663
申请日：1985-10-28
Applicant: John C. Brock
Inventor： John C. Brock
CPC classification number: H04B10/60 , G01J1/42 , G01J3/12 , G01J2001/4295 , G01J2001/442 , G01J2003/1252
Abstract: An optical filter and detector, and a related method for its operation, in which signal photons are admitted into a detector cell and selectively excite atoms or molecules of a vapor to a selected metastable state. An illuminating laser then photoionizes a large proportion of the excited atoms or molecules, and the resulting free electrons are collected as a measure of the number of incident signal photons. The initial excitation step to a metastable state is highly sensitive to the wavelength of the signal photons and therefore acts as a narrowband filter.
Abstract translation: 光学滤波器和检测器及其操作的相关方法，其中信号光子被允许进入检测器单元并选择性地将蒸气的原子或分子激发到选定的亚稳态。 然后照射激光使大部分激发的原子或分子光电离，并且将所得的自由电子作为入射信号光子的数量的度量进行收集。 到亚稳态的初始激发步骤对信号光子的波长高度敏感，因此用作窄带滤波器。
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公开(公告)号：US20240344882A1
公开(公告)日：2024-10-17
申请号：US18292490
申请日：2022-07-28
Inventor： Shigehito MIKI , Hirotaka TERAI
CPC classification number: G01J1/44 , G01J1/0425 , G01J2001/442
Abstract: A superconducting single-photon detection system includes: a plurality of optical transmission paths through each of which a photon emitted from a light source is transmitted; a plurality of superconducting single-photon detectors (hereinafter referred to as “SSPDs”) that are independent of each other and in one-to-one correspondence with the optical transmission paths; and a superconducting logic circuit that multiplexes first pulse signals output from the SSPDs. A photon entry time at which the photon enters each of the SSPDs through a corresponding one of the optical transmission paths is different for each of the optical transmission paths, and a difference in the photon entry time between the optical transmission paths is greater than a pulse width of a corresponding one of second pulse signals output from the superconducting logic circuit.
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Patent Agency Ranking
公开(公告)号：US20240337529A1
公开(公告)日：2024-10-10
申请号：US18293999
申请日：2022-07-28
Applicant: PIXEL PHOTONICS GMBH
Inventor： Fabian BEUTEL , Wolfram PERNICE , Nicolai WALTER
CPC classification number: G01J1/44 , G01J2001/442 , H04L9/0852
Abstract: The invention relates to a single-photon detector device (10) for detecting an optical signal, comprising an optical waveguide (12) and at least two nanowires (16, 18). The optical waveguide (12) is designed to guide the optical signal along an optical axis (14), wherein the at least two nanowires (16, 18) are arranged along the optical axis (14) relative thereto such that at least a second nanowire (18) is arranged in front of a first nanowire (16) with respect to the optical axis (14), wherein the at least two nanowires (16, 18) are designed to be superconductive at a specified temperature and, in the superconductive state, to generate an output signal when an intensity threshold of the optical signal is exceeded, and the at least two nanowires (16, 18) are designed so as to have different intensity thresholds. The invention additionally relates to the use of the aforementioned single-photon detector device for detecting an attack during a signal transmission encrypted using a quantum key distribution.
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公开(公告)号：US12078535B2
公开(公告)日：2024-09-03
申请号：US17966502
申请日：2022-10-14
Applicant: HERMES-EPITEK CORPORATION
Inventor： Shang-Jr Gwo , Ching-Wen Chang
CPC classification number: G01J1/44 , G01J1/0425 , G01J2001/442
Abstract: The invention provides a single-photon detector that includes a superconducting wire made from a high quality and uniform superconducting film with a higher critical temperature. A reflector or a multilayered reflector with high reflectivity, preferably a nitride-based distributed Bragg reflector, is provided to reflect an incident light to the superconducting wire. A surface-plasmon wavelength-selective surface may be further provided above the superconducting wire to resonantly transmits the incident light within a selective passband, making the single-photon detector operable in the ultraviolet, visible, and infrared wavelength bands. In addition, a large area of superconducting film with high level of uniformity is grown to achieve the up scaling of the single-photon detector and a single-photon detector array.
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公开(公告)号：US12061114B2
公开(公告)日：2024-08-13
申请号：US17967773
申请日：2022-10-17
Applicant: PsiQuantum Corp.
Inventor： Mark Thompson , Faraz Najafi
CPC classification number: G01J1/44 , G01J1/0407 , G02B6/4202 , H10N60/84 , G01J2001/442
Abstract: The various embodiments described herein include methods, devices, and systems for fabricating and operating superconducting photon detectors. In one aspect, a photon detector includes: (1) a first waveguide configured to guide photons from a photon source; (2) a second waveguide that is distinct and separate from the first waveguide and optically-coupled to the first waveguide; and (3) a superconducting component positioned adjacent to the second waveguide and configured to detect photons within the second waveguide.
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公开(公告)号：US12055755B1
公开(公告)日：2024-08-06
申请号：US17961043
申请日：2022-10-06
Applicant: Psiquantum, Corp.
Inventor： Eric Dudley
CPC classification number: G02B6/12004 , G01J1/0204 , G01J1/44 , G02B6/136 , G06N10/00 , G01J2001/442 , G02B2006/12135 , G02B2006/12138
Abstract: A method includes fabricating a device including a first dielectric layer, an optical waveguide in the first dielectric layer, and a superconducting circuit in the first dielectric layer and on the optical waveguide. The method also includes forming a sacrificial structure on the first dielectric layer, the sacrificial structure aligned with the superconducting circuit, depositing a second dielectric layer on the sacrificial structure, and cutting an opening in the second dielectric layer to expose the sacrificial structure. The method further includes wet etching the sacrificial structure through the opening and sealing the opening in the second dielectric layer with a third dielectric layer to form a micro-channel between the first dielectric layer and the second dielectric layer.
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公开(公告)号：US20240241229A1
公开(公告)日：2024-07-18
申请号：US18308259
申请日：2023-04-27
Applicant: TRUPIXEL INC.
Inventor： Myung-Jae LEE , Do Kyung HWANG
IPC: G01S7/4863 , G01J1/44 , G01S17/931
CPC classification number: G01S7/4863 , G01J1/44 , G01S17/931 , G01J2001/442 , G01J2001/4446
Abstract: Disclosed is a single photon detector comprising a semiconductor substrate and a 2D material layer provided adjacent to the semiconductor substrate, the semiconductor substrate includes a first well having a first conductivity type, a heavily doped region having a second conductivity type different from the first conductivity type, and a depletion region provided between the first well and the heavily doped region.
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