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1. 发明申请

US20230026894A1 Light Detection Device and Light Detection Method 有权
公开(公告)号：US20230026894A1
公开(公告)日：2023-01-26
申请号：US17791043
申请日：2020-12-24
申请人： National University Corporation Tokyo University of Agriculture and Technology
发明人： Kazuhiko Misawa , Terumasa Ito
IPC分类号： G01N21/65
摘要： Provided is a light detection device having a laser light source, a splitting unit, a first modulation unit, a second modulation unit, a first detection unit and a second detection unit that detect light, and a control unit.

2. 发明授权

US09778196B2 Optical detection device, optical detection method, and program 有权
公开(公告)号：US09778196B2
公开(公告)日：2017-10-03
申请号：US15121373
申请日：2015-02-10
申请人： National University Corporation Tokyo University of Agriculture and Technology
发明人： Takayuki Suzuki , Kazuhiko Misawa , Yuki Obara
IPC分类号： G01J3/44 , G01N21/65
CPC分类号： G01N21/65 , G01N2021/653
摘要： A phase sensitive detection mechanism that uses electrical processing is realized, and an optical detection device, an optical detection method, and a program that are capable of detecting faint light at high speed and with high sensitivity are provided by a simple configuration.A light source section generates a first pulsed light. A filter section transmits a second pulsed light formed from a portion of a frequency spectrum exhibited by the first pulsed light, and reflects a third pulsed light formed from another portion of the frequency spectrum exhibited by the first pulsed light. A phase modulation section phase modulates the second pulsed light at plural phases. A multiplexing section produces a fourth pulsed light by multiplexing the third pulsed light with the second pulsed light phase modulated by the phase modulation section. A detector spectrally disperses and detects scattered light generated by radiating the fourth pulsed light onto a target object. An extraction section uses specific calculation processing to synchronize with the phase modulation in the phase modulation section, so as to extract a frequency spectrum of scattered light scattered based on the second pulsed light phase modulated by the phase modulation section from the frequency spectrum of the scattered light detected by the detector.

3. 发明申请

US20160370297A1 OPTICAL DETECTION DEVICE, OPTICAL DETECTION METHOD, AND PROGRAM 有权
标题翻译：光学检测装置，光学检测方法和程序
公开(公告)号：US20160370297A1
公开(公告)日：2016-12-22
申请号：US15121373
申请日：2015-02-10
申请人： NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
发明人： Takayuki Suzuki , Kazuhiko Misawa , Yuki Obara
IPC分类号： G01N21/65
CPC分类号： G01N21/65 , G01N2021/653
摘要： A phase sensitive detection mechanism that uses electrical processing is realized, and an optical detection device, an optical detection method, and a program that are capable of detecting faint light at high speed and with high sensitivity are provided by a simple configuration.A light source section generates a first pulsed light. A filter section transmits a second pulsed light formed from a portion of a frequency spectrum exhibited by the first pulsed light, and reflects a third pulsed light formed from another portion of the frequency spectrum exhibited by the first pulsed light. A phase modulation section phase modulates the second pulsed light at plural phases. A multiplexing section produces a fourth pulsed light by multiplexing the third pulsed light with the second pulsed light phase modulated by the phase modulation section. A detector spectrally disperses and detects scattered light generated by radiating the fourth pulsed light onto a target object. An extraction section uses specific calculation processing to synchronize with the phase modulation in the phase modulation section, so as to extract a frequency spectrum of scattered light scattered based on the second pulsed light phase modulated by the phase modulation section from the frequency spectrum of the scattered light detected by the detector.
摘要翻译：光源部产生第一脉冲光。滤波器部分透射由第一脉冲光所表现的频谱的一部分形成的第二脉冲光，并且反射由第一脉冲光所表现的频谱的另一部分形成的第三脉冲光。相位调制部分对多个相位的第二脉冲光进行相位调制。复用部分通过将第三脉冲光与由相位调制部调制的第二脉冲光相复用而产生第四脉冲光。检测器对通过将第四脉冲光照射到目标物体上而产生的散射光进行光谱分散和检测。提取部使用特定的计算处理与相位调制部中的相位调制进行同步，从分散的频谱中提取基于由相位调制部调制的第二脉冲光相位散射的散射光的频谱由检测器检测到的光。

4. 发明申请

US20230100591A1 Light Detecting Device and Light Detecting Method 有权
公开(公告)号：US20230100591A1
公开(公告)日：2023-03-30
申请号：US17908466
申请日：2021-02-26
申请人： National University Corporation Tokyo University of Agriculture and Technology
发明人： Kazuhiko Misawa , Terumasa Ito
IPC分类号： G01N21/65 , G02B27/10 , H01S3/00 , H01S3/30
摘要： There is provided a light detecting device including: a laser light source generating light source pulse beam; a splitting section splitting the light source pulse beam into excitation beam, first probe beam and second probe beam; a first modulating section executing optical path length modulation that modulates a relative optical path length difference between the excitation beam, and the first probe beam and the second probe beam; a second modulating section phase-modulating the first probe beam; and a detecting section illuminating combined beam, in which the excitation beam, the first probe beam and the second probe beam are multiplexed, onto a sample, and detecting a stimulated Raman scattering signal that is generated.

5. 发明申请

US20210218215A1 Optical Pulse Pair Generator, Light Detection Device, and Light Detection Method 有权
公开(公告)号：US20210218215A1
公开(公告)日：2021-07-15
申请号：US17054849
申请日：2019-04-19
申请人： National University Corporation Tokyo University of Agriculture and Technology
发明人： Kazuhiko Misawa , Terumasa Ito
IPC分类号： H01S3/00 , H01S3/30 , G02B27/10 , G01N21/65 , G02B21/06
摘要： An optical pulse pair generator is configured to generate an optical pulse pair including a first pulse beam and a second pulse beam having respective central wavelengths that are separated by a predetermined wavelength difference from each other and having target time waveforms that are substantially the same as each other. The optical pulse pair generator provided includes a splitter section configured to split an incident pulse beam into two, a first shaping section configured to shape one of the pulse beams split by the splitter section by shaping into the target time waveform and setting a central frequency so as to configure the first pulse beam, and a second shaping section configured to shape the other of the pulse beams split by the splitter section by shaping into the target time waveform so as to configure the second pulse beam.

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