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公开(公告)号：US20220107221A1
公开(公告)日：2022-04-07
申请号：US17488493
申请日：2021-09-29
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koyo WATANABE , Hisanari TAKAHASHI , Kyohei SHIGEMATSU , Takashi INOUE
Abstract: A dispersion measurement apparatus includes a pulse forming unit, a correlation optical system, a beam splitter, an operation unit, an imaging unit, a spatial filter unit, and a photodetector. The pulse forming unit forms a light pulse train including light pulses having time differences and different center wavelengths. The beam splitter branches the light pulse train passed through a measurement object. The imaging unit disperses one light pulse train and images each light pulse. The spatial filter unit extracts light of a partial region of the other light pulse train. The correlation optical system outputs correlation light including a cross-correlation or an autocorrelation of the extracted light. The photodetector detects a temporal waveform of the correlation light. The operation unit estimates a wavelength dispersion amount in the measurement object based on a feature value of the temporal waveform.
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公开(公告)号：US20240142375A1
公开(公告)日：2024-05-02
申请号：US18279080
申请日：2021-12-15
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Kyohei SHIGEMATSU , Koji TAKAHASHI , Takashi INOUE
CPC classification number: G01N21/6408 , G01N21/255 , G01N21/6458 , G01N2021/1757 , G01N2021/1789 , G01N2021/6423 , G01N21/648 , G01N2201/0696
Abstract: A sample observation device includes a light source unit configured to output a pulse train in which multiple optical pulses with different center wavelengths are arranged at predetermined time intervals as excitation light; a measurement unit configured to perform time-resolved measurement on an optical response that is transmitted from the sample and corresponds to irradiation with the optical pulses included in the pulse train while scanning the sample with the excitation light, and to acquire measurement data with respect to the optical pulses; and a processing unit configured to perform linear unmixing processing on the measurement data with respect to the optical pulses on the basis of an excitation spectrum for every target included in the sample.
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公开(公告)号：US20220019094A1
公开(公告)日：2022-01-20
申请号：US17370468
申请日：2021-07-08
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koyo WATANABE , Naoya MATSUMOTO , Hisanari TAKAHASHI , Kyohei SHIGEMATSU , Takashi INOUE
IPC: G02F1/01
Abstract: Provided is a light shaping device including: an intensity modulation unit that modulates a spectrum intensity of an optical pulse that is input light, and outputs the optical pulse of which a temporal width is narrowed as output light. The intensity modulation unit modulates the spectrum intensity of the optical pulse with a mask expressed by a starting end wavelength from a central wavelength of the input light and a wavelength width.
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公开(公告)号：US20240110833A1
公开(公告)日：2024-04-04
申请号：US18530698
申请日：2023-12-06
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koyo WATANABE , Hisanari TAKAHASHI , Kyohei SHIGEMATSU , Takashi INOUE
CPC classification number: G01J3/4412 , G01J3/0208 , G01J3/0229 , G01J3/2823
Abstract: A dispersion measurement apparatus includes a pulse forming unit, a correlation optical system, a beam splitter, an operation unit, an imaging unit, a spatial filter unit, and a photodetector. The pulse forming unit forms a light pulse train including light pulses having time differences and different center wavelengths. The beam splitter branches the light pulse train passed through a measurement object. The imaging unit disperses one light pulse train and images each light pulse. The spatial filter unit extracts light of a partial region of the other light pulse train. The correlation optical system outputs correlation light including a cross-correlation or an autocorrelation of the extracted light. The photodetector detects a temporal waveform of the correlation light. The operation unit estimates a wavelength dispersion amount in the measurement object based on a feature value of the temporal waveform.
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公开(公告)号：US20230304923A1
公开(公告)日：2023-09-28
申请号：US18120551
申请日：2023-03-13
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Hisanari TAKAHASHI , Koyo WATANABE , Hiroshi SATOZONO , Kyohei SHIGEMATSU , Takashi INOUE
CPC classification number: G01N21/31 , G02F1/31 , G02F2203/055
Abstract: An optical property measurement apparatus includes a pulse formation unit, a waveform measurement unit, and an optical system. The pulse formation unit is capable of changing a temporal waveform of pulsed light in accordance with a type of optical property to be measured. The waveform measurement unit measures a temporal waveform of the pulsed light output from a measurement object after being incident on the measurement object. The optical system has an attenuation unit with an attenuation rate with respect to one wavelength component constituting the pulsed light larger than an attenuation rate with respect to another wavelength component constituting the pulsed light. The optical system is capable of switching between a first state in which the attenuation unit is arranged on an optical path of the pulsed light output from the measurement object and a second state in which the attenuation unit is not arranged on the optical path.
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Patent Agency Ranking
公开(公告)号：US20250068002A1
公开(公告)日：2025-02-27
申请号：US18721444
申请日：2023-01-11
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Ryu NIIGAKI , Koji TAKAHASHI , Kyohei SHIGEMATSU
IPC: G02F1/01
Abstract: In a multi-pulse light source, a dispersion compensation unit includes a spectroscopic element configured to spectrally separate a plurality of wavelength components, a separation optical element that guides a first optical pulse group including one or more wavelength components among a plurality of wavelength components, and a second optical pulse group including one or more wavelength components different from the one or more wavelength components included in the first optical pulse group among the plurality of wavelength components to optical paths different from each other, a first spatial light modulator on which the first optical pulse group is incident and which compensates dispersion for each wavelength component with respect to the first optical pulse group, and a second spatial light modulator on which the second optical pulse group is incident and which compensates dispersion for each wavelength component with respect to the second optical pulse group.
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7.发明公开公开(公告)号：US20240003744A1
公开(公告)日：2024-01-04
申请号：US18368830
申请日：2023-09-15
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koyo WATANABE , Kyohei SHIGEMATSU , Takashi INOUE
CPC classification number: G01J3/453 , G01J11/00 , G01M11/3163 , H01S3/0057 , H01S3/0092
Abstract: A dispersion measurement apparatus includes a pulse forming unit, a correlation optical system, a photodetection unit, and an operation unit. The pulse forming unit forms a light pulse train including a plurality of light pulses having time differences and center wavelengths different from each other from a measurement target light pulse output from a pulsed laser light source. The correlation optical system receives the light pulse train output from the pulse forming unit and outputs correlation light including a cross-correlation or an autocorrelation of the light pulse train. The photodetection unit detects a temporal waveform of the correlation light output from the correlation optical system. The operation unit estimates a wavelength dispersion amount of the pulsed laser light source based on a feature value of the temporal waveform of the correlation light.
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公开(公告)号：US20230333007A1
公开(公告)日：2023-10-19
申请号：US18026173
申请日：2021-07-05
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koyo WATANABE , Hisanari TAKAHASHI , Kyohei SHIGEMATSU , Takashi INOUE
IPC: G01N21/31
CPC classification number: G01N21/31 , G01N2201/0634
Abstract: A dispersion measurement apparatus includes a pulse forming unit, an imaging unit, and an operation unit. The pulse forming unit forms a light pulse train including a plurality of light pulses having time differences and center wavelengths different from each other from a light pulse output from a pulsed laser light source. The imaging unit includes an image sensor capable of performing imaging at an imaging interval shorter than a minimum peak interval of the light pulse train, and images a light pulse train passed through a measurement object to generate imaging data. The operation unit receives the imaging data, detects a temporal waveform of the light pulse train for each pixel of the image sensor, and estimates a wavelength dispersion amount of the measurement object for each pixel of the image sensor based on a feature value of the temporal waveform.
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公开(公告)号：US20230304926A1
公开(公告)日：2023-09-28
申请号：US18120533
申请日：2023-03-13
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Hisanari TAKAHASHI , Koyo WATANABE , Hiroshi SATOZONO , Kyohei SHIGEMATSU , Takashi INOUE
CPC classification number: G01N21/39 , G01N21/27 , G01N21/314 , G01N2021/1789
Abstract: A time response measurement apparatus includes a pulse formation unit, an attenuation unit, a waveform measurement unit, and an analysis unit. The pulse formation unit generates first pulsed light including a wavelength of pump light, second pulsed light including a wavelength of probe light, and third pulsed light including the wavelength of the pump light and the wavelength of the probe light, on a common optical axis. The attenuation unit transmits the first pulsed light, the second pulsed light, and the third pulsed light output from a sample arranged on the optical axis after being incident on the sample. An attenuation rate for the pump light is larger than an attenuation rate for the probe light. The analysis unit obtains a time response of the sample based on temporal waveforms of the first pulsed light, the second pulsed light, and the third pulsed light having passed through the attenuation unit.
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公开(公告)号：US20220178752A1
公开(公告)日：2022-06-09
申请号：US17600667
申请日：2020-03-27
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Koyo WATANABE , Kyohei SHIGEMATSU , Takashi INOUE
Abstract: A dispersion measurement apparatus includes a pulse forming unit, a correlation optical system, a photodetection unit, and an operation unit. The pulse forming unit forms a light pulse train including a plurality of light pulses having time differences and center wavelengths different from each other from a measurement target light pulse output from a pulsed laser light source. The correlation optical system receives the light pulse train output from the pulse forming unit and outputs correlation light including a cross-correlation or an autocorrelation of the light pulse train. The photodetection unit detects a temporal waveform of the correlation light output from the correlation optical system. The operation unit estimates a wavelength dispersion amount of the pulsed laser light source based on a feature value of the temporal waveform of the correlation light.
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