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1.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：US11754442B2
公开(公告)日：2023-09-12
申请号：US17428408
申请日：2020-03-06
Applicant: Sony Semiconductor Solutions Corporation
Inventor： Hongbo Zhu , Kazuki Hizu , Takafumi Takatsuka , Yusuke Oike , Jun Ogi , Yoshiaki Tashiro
CPC classification number: G01J1/44 , G01J11/00 , H01L31/02027 , H03K23/58 , G01J2001/448 , G02B5/20
Abstract: A light-receiving apparatus (1a) includes a counting unit (11), a setting unit (12), and an acquiring unit (13). The counting unit is configured to measure a detection number of times that represents the number of times incidence of a photon to a light-receiving element has been detected within an exposure period and to output a counted value. The setting unit is configured to set a cycle of updating time information in accordance with an elapsed time during the exposure period. The acquiring unit is configured to acquire the time information indicating a time at which the counted value reaches a threshold before the exposure period elapses.
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公开(公告)号：US11709097B2
公开(公告)日：2023-07-25
申请号：US17379507
申请日：2021-07-19
Applicant: University of South Florida
Inventor： Zhimin Shi , Darrick Hay , Ziyi Zhu , Yiyu Zhou , Robert W. Boyd
Abstract: An apparatus measures the transverse profile of vectorial optical field beams, including both the phase and the polarization spatial profile. The apparatus contains a polarization separation module, a weak perturbation module, and a detection module. Characterizing the transverse profile of vector fields provides an optical metrology tool for both fundamental studies of vectorial optical fields and a wide spectrum of applications, including microscopy, surveillance, imaging, communication, material processing, and laser trapping.
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公开(公告)号：US11686951B2
公开(公告)日：2023-06-27
申请号：US17240050
申请日：2021-04-26
Applicant: Cymer, LLC , ASML Netherlands B.V.
Inventor： Wilhelmus Patrick Elisabeth Maria op 't Root , Thomas Patrick Duffey , Herman Philip Godfried , Frank Everts , Joshua Jon Thornes , Brian Edward King
IPC: G02B27/48 , G01J3/26 , G01J9/02 , G01J3/02 , G03F7/00 , H01S3/225 , H01S3/00 , G01J11/00 , G02F1/01 , H01S4/00 , G02B19/00
CPC classification number: G02B27/48 , G01J3/027 , G01J3/26 , G01J9/02 , G01J11/00 , G02F1/0121 , G03F7/70008 , G03F7/70041 , G03F7/7055 , H01S3/0085 , H01S3/225 , H01S4/00 , G01J2009/0211 , G02B19/0095 , G02F2203/18 , G03F7/70025 , G03F7/70583 , H01S3/0057
Abstract: A method includes: producing a light beam made up of pulses having a wavelength in the deep ultraviolet range, each pulse having a first temporal coherence defined by a first temporal coherence length and each pulse being defined by a pulse duration; for one or more pulses, modulating the optical phase over the pulse duration of the pulse to produce a modified pulse having a second temporal coherence defined by a second temporal coherence length that is less than the first temporal coherence length of the pulse; forming a light beam of pulses at least from the modified pulses; and directing the formed light beam of pulses toward a substrate within a lithography exposure apparatus.
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公开(公告)号：US11680853B2
公开(公告)日：2023-06-20
申请号：US17392859
申请日：2021-08-03
Applicant: Rockwell Collins, Inc.
Inventor： Han Chi Hsieh , Wenlu Chen , Oliver S. King
Abstract: A circuit and method for timing-tolerant optical pulse energy electrical conversion receives a current pulse stream converted from an input optical pulse stream (which may be periodic or nonperiodic), converts the current pulse stream to an electrical waveform of voltage pulses and detects each voltage pulse, e.g., by its leading edge. The conversion circuit may include a divider circuit for receiving the electrical waveform, dividing the waveform into a multi-channel output of divided electrical waveforms, and sequential logic circuits for adjusting a width window of each voltage pulse according to an adjustable delay.
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Patent Agency Ranking
公开(公告)号：US20190204160A1
公开(公告)日：2019-07-04
申请号：US16213712
申请日：2018-12-07
Applicant: FLIR Systems, Inc.
Inventor： Brian B. Simolon
Abstract: Techniques are disclosed for facilitating pulse detection and imaging. In one example, a device includes a detector configured to detect electromagnetic radiation and generate a detection signal based on the detected electromagnetic radiation. The device further includes an input circuit configured to provide, based on the detection signal, a first signal and a second signal. The device further includes an imaging integration circuit configured to generate an image of at least a portion of a scene based at least in part on the first signal. The device further includes a pulse detection circuit configured to perform pulse detection to generate an indication of whether a pulse is detected in the portion of the scene based at least in part on the second signal. Related methods and systems are also provided.
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公开(公告)号：US20180245984A1
公开(公告)日：2018-08-30
申请号：US15754377
申请日：2016-08-24
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Haruyasu ITO , Yasunori IGASAKI , Junji OKUMA
CPC classification number: G01J11/00 , G02F1/37 , G02F2202/20
Abstract: An autocorrelation measurement device includes a first reflection member, a second reflection member, a focusing unit, a nonlinear optical crystal, a detection unit, a filter, an aperture, a delay adjusting unit, and an analysis unit. Incident pulsed light is transmitted through the second reflection member and incident on the first reflection member. First pulsed light reflected on a first reflection surface of the first reflection member and a second reflection surface of the second reflection member and second pulsed light reflected on a second reflection surface of the first reflection member and a first reflection surface of the second reflection member are incident on the nonlinear optical crystal via the focusing unit. Second harmonic light generated in the nonlinear optical crystal is detected by the detection unit.
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公开(公告)号：US10054691B1
公开(公告)日：2018-08-21
申请号：US14193024
申请日：2014-02-28
Inventor： John D. Wrbanek , Susan Wrbanek
IPC: G01T1/22 , H01L31/0296 , H01L31/0224 , G01J1/42 , G01T1/24
CPC classification number: G01T1/22 , G01J1/429 , G01J11/00 , G01T1/24 , G01T1/26 , H01L31/0224 , H01L31/0296 , H01L31/09
Abstract: A solid-state radiation detector includes a pattern of conductive metal on a zinc oxide substrate. The pattern provides an arrangement of interdigitated electrode fingers. The wide band gap substrate is sensitive to UV light, which can cause a conductivity change in the substrate. The electrode fingers are configured to sense a difference in substrate conductivity resulting from UV light. The detector has a fast response time, which enables it to detect Cherenkov light. The compact detector provides savings on size, weight, and required power. Thus, the solid-state detector can be used to replace photomultiplier tubes in Cherenkov detectors. The features of the novel detector allow for an improved system to detect and monitor UV radiation, especially during deep space missions.
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公开(公告)号：US09835495B2
公开(公告)日：2017-12-05
申请号：US14947335
申请日：2015-11-20
Applicant: Gigaphoton Inc.
Inventor： Masato Moriya , Osamu Wakabayashi , Yoshinobu Watabe
IPC: G01J11/00 , H01S3/134 , H01S3/00 , G01J1/42 , G01J1/04 , G01J4/04 , G02B5/30 , G02B27/14 , H01S3/23
CPC classification number: G01J11/00 , G01J1/0414 , G01J1/0429 , G01J1/0477 , G01J1/4257 , G01J4/04 , G01J2001/4261 , G02B5/3066 , G02B27/148 , H01S3/0014 , H01S3/134 , H01S3/2366
Abstract: A light beam measurement device includes: a polarization measurement unit including a first measurement beam splitter provided on an optical path of a laser beam and configured to measure a polarization state of the laser beam having been partially reflected by the first measurement beam splitter; a beam profile measurement unit including a second measurement beam splitter provided on the optical path of the laser beam and configured to measure a beam profile of the laser beam having been partially reflected by the second measurement beam splitter; and a laser beam-directional stability measurement unit configured to measure a stability in a traveling direction of the laser beam, while the first measurement beam splitter and the second measurement beam splitter are made of a material containing CaF2.
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公开(公告)号：US20170299441A1
公开(公告)日：2017-10-19
申请号：US15469413
申请日：2017-03-24
Applicant: SETI Institute
Inventor： Eliot Gillum , Alan Holmes
CPC classification number: G01J11/00 , G01J1/4228 , G01J3/2803 , H04N5/247
Abstract: A system and method for detecting laser pulses is disclosed. According to one embodiment, the present system detects an extrasolar laser pulse, ideally repeated pulses, by observing the pulse, characterizing the pulse, and confirming the data related to the pulse.
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