公开(公告)号：US06985219B2

公开(公告)日：2006-01-10

申请号：US09746618

申请日：2000-12-21

Applicant: Kenneth R. Wilsher ,  Steven A Kasapi

Inventor： Kenneth R. Wilsher ,  Steven A Kasapi

IPC: G01N21/88

CPC classification number: G01R31/311 ,  G01R31/31905

Abstract: A method and system of testing integrated circuits (IC) via optical coupling. The optical system includes an optical fiber, fixture and focussing element. In addition, channels are provided in the fixture mounted on the integrated circuit to accommodate the optical system. The fixture acts as a heat sink. As such, one or more photosensitive elements/targets on the integrated circuit are probed using light that is brought to a focus on each target site. The light causes latching of data into the integrated circuit (which is operating under influence of a test program) and formation of a test pattern output from the integrated circuit that is used to confirm proper functioning of the IC.

公开(公告)号：US06252222B1

公开(公告)日：2001-06-26

申请号：US09483463

申请日：2000-01-13

Applicant: Steven A. Kasapi ,  Chun-Cheng Tsao ,  Seema Somani

Inventor： Steven A. Kasapi ,  Chun-Cheng Tsao ,  Seema Somani

IPC: G01R31265

CPC classification number: G01R31/308

Abstract: A laser beam is used to probe an integrated circuit device under test. A single laser provides a single laser pulse which is divided into two pulses, both of which are incident upon the device under test. After the two pulses interact with the device under test, the two pulses are separated and detected by two photo detectors. The electrical signals output by the photo detectors are then subtracted, which cancels out any common mode noise induced on both pulses including noise due to mechanical vibration of the device under test and also any noise from the laser. The difference signal can be used to reproduce a time varying signal in the device under test.

Abstract translation: 激光束用于探测被测集成电路器件。 单个激光器提供单个激光脉冲，其被分成两个脉冲，两个脉冲都入射在被测器件上。 在两个脉冲与被测器件相互作用之后，两个脉冲被两个光电检测器分离并检测。 然后减去由光电检测器输出的电信号，这消除了由于被测器件的机械振动引起的包括噪声在内的两种脉冲引起的任何共模噪声，以及来自激光器的任何噪声。 差分信号可用于在被测器件中再现时变信号。

公开(公告)号：US06812464B1

公开(公告)日：2004-11-02

申请号：US09628116

申请日：2000-07-28

Applicant: Roman Sobolewski ,  Grigory N. Gol'tsman ,  Alexey D. Semenov ,  Oleg V. Okunev ,  Kenneth R. Wilsher ,  Steven A. Kasapi

Inventor： Roman Sobolewski ,  Grigory N. Gol'tsman ,  Alexey D. Semenov ,  Oleg V. Okunev ,  Kenneth R. Wilsher ,  Steven A. Kasapi

IPC: H01L3900

CPC classification number: H01L39/10 ,  G01J1/0209 ,  G01J1/0252 ,  G01J1/0411 ,  G01J1/42 ,  H01L31/101

Abstract: A single photon detector includes a superconductor strip biased near its critical current. The superconductor strip provides a discernible output signal upon absorption of a single incident photon. In one example, the superconductor is a strip of NbN (niobium nitride). In another example, the superconductor strip meanders to increase its probability of receiving a photon from a light source. The single-photon detector is suitable for a variety of applications including free-space and satellite communications, quantum communications, quantum cryptography, weak luminescence, and semiconductor device testing.

Abstract translation: 单个光子检测器包括在其临界电流附近偏置的超导体带。 超导体条在吸收单个入射光子时提供可辨别的输出信号。 在一个实例中，超导体是NbN（氮化铌）的条带。 在另一个示例中，超导体条弯曲以增加其从光源接收光子的概率。 单光子检测器适用于自由空间和卫星通信，量子通信，量子加密，弱发光和半导体器件测试等各种应用。

公开(公告)号：US07049593B2

公开(公告)日：2006-05-23

申请号：US10969315

申请日：2004-10-19

Applicant: Roman Sobolewski ,  Grigory N. Gol'tsman ,  Alexey D. Semenov ,  Oleg V. Okunev ,  Kenneth R. Wilsher ,  Steven A. Kasapi

Inventor： Roman Sobolewski ,  Grigory N. Gol'tsman ,  Alexey D. Semenov ,  Oleg V. Okunev ,  Kenneth R. Wilsher ,  Steven A. Kasapi

IPC: H01L39/00

CPC classification number: H01L39/10 ,  G01J1/0209 ,  G01J1/0252 ,  G01J1/0411 ,  G01J1/42 ,  H01L31/101

Abstract: A single-photon detector includes a superconductor strip biased near its critical current. The superconductor strip provides a discernible output signal upon absorption of a single incident photon. In one example, the superconductor is a strip of NbN (niobium nitride). In another example, the superconductor strip meanders to increase its probability of receiving a photon from a light source. The single-photon detector is suitable for a variety of applications including free-space and satellite communications, quantum communications, quantum cryptography, weak luminescence, and semiconductor device testing.

Abstract translation: 单光子检测器包括在其临界电流附近偏置的超导体带。 超导体条在吸收单个入射光子时提供可辨别的输出信号。 在一个实例中，超导体是NbN（氮化铌）的条带。 在另一个示例中，超导体条弯曲以增加其从光源接收光子的概率。 单光子检测器适用于自由空间和卫星通信，量子通信，量子加密，弱发光和半导体器件测试等各种应用。