JP2019207946A - 光差分検出器及び検査装置 - Google Patents
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
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- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
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- G01R31/26—Testing of individual semiconductor devices
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02016—Circuit arrangements of general character for the devices
- H01L31/02019—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02027—Circuit arrangements of general character for the devices for devices characterised by at least one potential jump barrier or surface barrier for devices working in avalanche mode
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
- H01L31/102—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier
- H01L31/107—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier the potential barrier working in avalanche mode, e.g. avalanche photodiodes
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Abstract
Description
[検査装置]
[光差分検出器の第1実施形態]
[光差分検出器の第2実施形態]
[光差分検出器の第3実施形態]
[光差分検出器の第4実施形態]
[光差分検出器の変形例]
Claims (7)
- 入力光に応じた信号電流を増幅して出力する第1のアバランシェフォトダイオード及び第2のアバランシェフォトダイオードと、
前記第1のアバランシェフォトダイオードに第1のバイアス電圧を印加する第1の電圧印加部、及び前記第2のアバランシェフォトダイオードに第2のバイアス電圧を印加する第2の電圧印加部と、
前記第1のアバランシェフォトダイオードと前記第2のアバランシェフォトダイオードとが並列に接続され、前記第1のアバランシェフォトダイオードから出力される第1の信号電流と、前記第2のアバランシェフォトダイオードから出力される第2の信号電流とを差分増幅する差分増幅器と、
前記第1のアバランシェフォトダイオードにおける第1のモニタ用電流の低周波成分と、前記第2のアバランシェフォトダイオードにおける第2のモニタ用電流の低周波成分とが等しくなるように、前記第1のバイアス電圧及び前記第2のバイアス電圧の少なくとも一方を制御するフィードバック制御部と、を備えた光差分検出器。 - 前記第1のモニタ用電流は、前記第1のバイアス電圧の印加によって前記第1のアバランシェフォトダイオードに流れる第1のバイアス電流であり、
前記第2のモニタ用電流は、前記第2のバイアス電圧の印加によって前記第2のアバランシェフォトダイオードに流れる第2のバイアス電流である請求項1記載の光差分検出器。 - 前記第1のモニタ用電流は、前記第1のアバランシェフォトダイオードから出力される前記第1の信号電流であり、
前記第2のモニタ用電流は、前記第2のアバランシェフォトダイオードから出力される第2の信号電流である請求項1記載の光差分検出器。 - 入力光に応じた信号電流を増幅して出力する第1のアバランシェフォトダイオード及び第2のアバランシェフォトダイオードと、
前記第1のアバランシェフォトダイオードに第1のバイアス電圧を印加する第1の電圧印加部、及び前記第2のアバランシェフォトダイオードに第2のバイアス電圧を印加する第2の電圧印加部と、
前記第1のアバランシェフォトダイオードと前記第2のアバランシェフォトダイオードとが並列に接続され、前記第1のアバランシェフォトダイオードから出力される第1の信号電流と、前記第2のアバランシェフォトダイオードから出力される第2の信号電流とを差分増幅する差分増幅器と、
前記第1のアバランシェフォトダイオードへの入力光又は前記第2のアバランシェフォトダイオードへの入力光を減衰させる光減衰器と、
前記第1のアバランシェフォトダイオードにおける第1のモニタ用電流の低周波成分と、前記第2のアバランシェフォトダイオードにおける第2のモニタ用電流の低周波成分とが等しくなるように、前記光減衰器による前記入力光の減衰量を制御するフィードバック制御部と、を備えた光差分検出器。 - 前記第1のモニタ用電流は、前記第1のバイアス電圧の印加によって前記第1のアバランシェフォトダイオードに流れる第1のバイアス電流であり、
前記第2のモニタ用電流は、前記第2のバイアス電圧の印加によって前記第2のアバランシェフォトダイオードに流れる第2のバイアス電流である請求項4記載の光差分検出器。 - 前記第1のモニタ用電流は、前記第1のアバランシェフォトダイオードから出力される前記第1の信号電流であり、
前記第2のモニタ用電流は、前記第2のアバランシェフォトダイオードから出力される第2の信号電流である請求項4記載の光差分検出器。 - 計測対象物に向けて検査光を出力する光源と、
前記計測対象物に対向して配置される磁気光学結晶と、
請求項1〜6のいずれか一項記載の光差分検出器と、を備え、
前記第1のアバランシェフォトダイオードは、前記光源から出力して前記磁気光学結晶で反射した第1の偏光成分を有する第1の検査光を検出し、
前記第2のアバランシェフォトダイオードは、前記光源から出力して前記磁気光学結晶で反射した第2の偏光成分を有する第2の検査光を検出する検査装置。
Priority Applications (10)
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JP2018102476A JP7327908B2 (ja) | 2018-05-29 | 2018-05-29 | 光差分検出器及び検査装置 |
KR1020207032085A KR102715548B1 (ko) | 2018-05-29 | 2019-03-19 | 광 차분 검출기 및 검사 장치 |
SG11202008000TA SG11202008000TA (en) | 2018-05-29 | 2019-03-19 | Optical difference detector and inspection device |
EP19811802.8A EP3806166A4 (en) | 2018-05-29 | 2019-03-19 | OPTICAL DIFFERENCE DETECTOR AND INSPECTION DEVICE |
PCT/JP2019/011522 WO2019230147A1 (ja) | 2018-05-29 | 2019-03-19 | 光差分検出器及び検査装置 |
CN201980035649.8A CN112204755B (zh) | 2018-05-29 | 2019-03-19 | 光差分检测器及检查装置 |
US16/981,524 US11243113B2 (en) | 2018-05-29 | 2019-03-19 | Optical difference detector and inspection device |
TW112120719A TWI857631B (zh) | 2018-05-29 | 2019-04-12 | 光差檢測器及檢查裝置 |
TW108112789A TWI801557B (zh) | 2018-05-29 | 2019-04-12 | 光差檢測器及檢查裝置 |
US17/539,702 US11733091B2 (en) | 2018-05-29 | 2021-12-01 | Optical difference detector and inspection device |
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EP (1) | EP3806166A4 (ja) |
JP (1) | JP7327908B2 (ja) |
CN (1) | CN112204755B (ja) |
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WO (1) | WO2019230147A1 (ja) |
Citations (8)
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JPS6187440A (ja) * | 1984-10-04 | 1986-05-02 | Seiko Epson Corp | 光信号検出装置 |
JPH065888A (ja) * | 1992-06-22 | 1994-01-14 | Fujitsu Ltd | 光検出装置及びそれを用いた電気機器の故障監視装置 |
JP2000200922A (ja) * | 1999-01-07 | 2000-07-18 | Nec Corp | 光信号検出装置および光信号検出方法 |
JP2008219765A (ja) * | 2007-03-07 | 2008-09-18 | Nec Corp | 光受信装置とバランス調整方法 |
US20110133058A1 (en) * | 2009-12-04 | 2011-06-09 | Electronics And Telecommunications Research Institute | Method and apparatus for cancellation of transient voltage spike |
US20130334434A1 (en) * | 2012-05-15 | 2013-12-19 | Princeton Lightwave, Inc. | Dual-SPAD-Based Single-Photon Receiver |
WO2014132609A1 (ja) * | 2013-02-27 | 2014-09-04 | 日本電気株式会社 | 光受信装置およびその制御方法 |
WO2017094495A1 (ja) * | 2015-12-03 | 2017-06-08 | 浜松ホトニクス株式会社 | 検査装置及び検査方法 |
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KR100406477B1 (ko) * | 1995-01-31 | 2004-03-24 | 소니 가부시끼 가이샤 | 광신호검출회로 |
US7332702B2 (en) * | 2002-08-05 | 2008-02-19 | Sumitomo Electric Industries, Ltd. | Optical receiver and a method for manufacturing the same |
US20050084980A1 (en) * | 2003-10-17 | 2005-04-21 | Intel Corporation | Method and device for detecting a small number of molecules using surface-enhanced coherant anti-stokes raman spectroscopy |
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JP6581081B2 (ja) * | 2014-06-04 | 2019-09-25 | 浜松ホトニクス株式会社 | 検査装置及び磁気光学結晶の配置方法 |
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- 2018-05-29 JP JP2018102476A patent/JP7327908B2/ja active Active
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- 2019-03-19 US US16/981,524 patent/US11243113B2/en active Active
- 2019-03-19 CN CN201980035649.8A patent/CN112204755B/zh active Active
- 2019-03-19 WO PCT/JP2019/011522 patent/WO2019230147A1/ja unknown
- 2019-03-19 EP EP19811802.8A patent/EP3806166A4/en active Pending
- 2019-03-19 SG SG11202008000TA patent/SG11202008000TA/en unknown
- 2019-04-12 TW TW108112789A patent/TWI801557B/zh active
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Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6187440A (ja) * | 1984-10-04 | 1986-05-02 | Seiko Epson Corp | 光信号検出装置 |
JPH065888A (ja) * | 1992-06-22 | 1994-01-14 | Fujitsu Ltd | 光検出装置及びそれを用いた電気機器の故障監視装置 |
JP2000200922A (ja) * | 1999-01-07 | 2000-07-18 | Nec Corp | 光信号検出装置および光信号検出方法 |
JP2008219765A (ja) * | 2007-03-07 | 2008-09-18 | Nec Corp | 光受信装置とバランス調整方法 |
US20110133058A1 (en) * | 2009-12-04 | 2011-06-09 | Electronics And Telecommunications Research Institute | Method and apparatus for cancellation of transient voltage spike |
US20130334434A1 (en) * | 2012-05-15 | 2013-12-19 | Princeton Lightwave, Inc. | Dual-SPAD-Based Single-Photon Receiver |
WO2014132609A1 (ja) * | 2013-02-27 | 2014-09-04 | 日本電気株式会社 | 光受信装置およびその制御方法 |
WO2017094495A1 (ja) * | 2015-12-03 | 2017-06-08 | 浜松ホトニクス株式会社 | 検査装置及び検査方法 |
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CN112204755B (zh) | 2024-07-26 |
WO2019230147A1 (ja) | 2019-12-05 |
US11733091B2 (en) | 2023-08-22 |
US20220090959A1 (en) | 2022-03-24 |
EP3806166A1 (en) | 2021-04-14 |
US11243113B2 (en) | 2022-02-08 |
TW202004172A (zh) | 2020-01-16 |
TWI801557B (zh) | 2023-05-11 |
SG11202008000TA (en) | 2020-09-29 |
JP7327908B2 (ja) | 2023-08-16 |
TW202338337A (zh) | 2023-10-01 |
US20210010856A1 (en) | 2021-01-14 |
EP3806166A4 (en) | 2022-03-30 |
KR20210014623A (ko) | 2021-02-09 |
CN112204755A (zh) | 2021-01-08 |
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