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1.发明公开公开(公告)号：US20240113490A1
公开(公告)日：2024-04-04
申请号：US17937071
申请日：2022-09-30
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Stanley Cheung , Wayne Victor Sorin , Yuan Yuan , Raymond G. Beausoleil , Di Liang
CPC classification number: H01S3/083 , H01S3/08027 , H01S3/08031 , H01S3/10053 , H01S3/1062 , H01S3/107
Abstract: Examples described herein relate to an optical device. The optical device includes a first microring resonator (MRR) laser having a first resonant frequency and a first free spectral range (FSR). The first FSR is greater than a channel spacing of the optical device. Further, the optical device includes a first frequency-dependent filter formed along a portion of the first MRR laser via a common bus waveguide to attenuate one or more frequencies different from the first resonant frequency. A length of the common bus waveguide is chosen to achieve a second FSR of the common bus waveguide to be substantially equal to the channel spacing to enable a single-mode operation for the optical device. Moreover, the optical device includes a first reflector formed at a first end of the common bus waveguide to enhance a unidirectionality of optical signal within the first MRR laser.
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公开(公告)号：US20180309260A1
公开(公告)日：2018-10-25
申请号：US15957787
申请日：2018-04-19
Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventor： Young Min JHON , Byunghyuck MOON , Young In JOHN , Minah SEO , Jaehun KIM , Yongsang RYU , Taikjin LEE , Seok LEE
CPC classification number: H01S3/1112 , H01S3/08027 , H01S3/08036 , H01S3/08054 , H01S3/092 , H01S3/0941 , H01S3/10061 , H01S3/107 , H01S3/1075 , H01S3/11 , H01S3/1103 , H01S3/1109 , H01S3/115 , H01S3/1611 , H01S3/1623 , H01S3/1625 , H01S3/1636 , H01S3/1643 , H01S2301/08
Abstract: Disclosed herein is a single pulse laser apparatus which includes a first mirror and a second mirror disposed at both ends of the single pulse laser apparatus and having reflectivities of a predetermined level or more; a gain medium rotated at a predetermined angle and configured to oscillate a laser beam in a manual mode-locking state; a linear polarizer configured to output a beam having a specific polarized component of the oscillated laser beam; an etalon configured to adjust a pulse width of the oscillated laser beam; and an electro-optic modulator configured to perform Q-switching and single pulse switching.
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3.发明授权公开(公告)号：US09905990B1
公开(公告)日：2018-02-27
申请号：US14689964
申请日：2015-04-17
Applicant: Alakai Defense Systems, Inc.
Inventor： Ken Pohl , Matthew King , Adam J. Hopkins , Alan Ford
IPC: H01S3/106 , G01N21/65 , H01S3/08 , H01S3/1055 , H01S3/107
CPC classification number: H01S3/1062 , G01J3/44 , G01N21/65 , H01S3/025 , H01S3/08054 , H01S3/0809 , H01S3/0823 , H01S3/105 , H01S3/1055 , H01S3/1068 , H01S3/107
Abstract: A system, apparatus, and method for multiple wavelength Raman interrogation laser generation and Raman spectra acquisition. An intracavity laser tuning subsystem is integrated into the laser cavity. The tuning subsystem allows switching between at least two laser output frequencies in a manner effective for good identification and separation of Raman spectra from non-Raman spectra, including auto-fluorescence from the sample and background. The tuning subsystem can be implemented in different ways in the cavity. It does not require material alteration of the line-narrowing components. Also, processing of acquired raw signal from the multiple wavelength interrogation can further assist effective Raman spectra identification and separation.
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公开(公告)号：US09865982B1
公开(公告)日：2018-01-09
申请号：US15085707
申请日：2016-03-30
Applicant: Rockwell Collins, Inc.
Inventor： Thomas J. Cullen , Mark A. Laliberte , Raymond Zanoni
IPC: H04B10/06 , H01S3/30 , H01S3/098 , H01S3/083 , H01S3/067 , H01S3/0941 , H01S3/094 , H01S3/11 , H01S3/08 , H04B10/275 , H04B10/60
CPC classification number: H01S3/06791 , H01S3/06712 , H01S3/08027 , H01S3/094003 , H01S3/0941 , H01S3/09415 , H01S3/107 , H01S3/1106 , H01S3/1109 , H04B10/275 , H04B10/60
Abstract: A mode-locked laser has optical components integrated into a single apparatus and interrelated via optical free-space coupling. The laser optical cavity path is reduced to less than ten meters, primarily composed of optical gain fiber. A Fabry-Perot filter is matched to the laser pulse repetition frequency. Utilizing a Fabry-Perot filter within the laser optical cavity suppresses supermode spurs in the phase noise spectrum; thereby reducing total timing jitter.
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公开(公告)号：US09846319B2
公开(公告)日：2017-12-19
申请号：US15229701
申请日：2016-08-05
Inventor： Thorald Horst Bergmann , Fedor Bergmann , Mathias Siebold , Markus Löser
CPC classification number: G02F1/0327 , G02F1/03 , H01S3/10038 , H01S3/10061 , H01S3/107 , H01S3/1618 , H01S3/1643 , H01S3/235 , H03K5/07
Abstract: The driver circuit comprises a first node (J1), which is connected to a first terminal of the Pockels cell (CP), a second node (J2), which is connected to a second terminal of the Pockels cell (CP), wherein the first node (J1) is connected to a first potential (+HV) via a first switching unit (S1) and the second node (J2) is connected to the first potential (+HV) via a second switching unit (S2) and wherein the first node (J1) is connected to a second potential (−HV) via a first resistance (R1) and the second node (J2) is connected to the second potential (−HV) via a second resistance (R2); and wherein the first node (J1) is connected to the second node (J2) via a series circuit comprising a third resistance (R3) and an inductance (L1).
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Patent Agency Ranking
6.发明授权公开(公告)号：US09832852B1
公开(公告)日：2017-11-28
申请号：US15343768
申请日：2016-11-04
Applicant: ASML Netherlands B.V.
Inventor： Igor V. Fomenkov , Robert Jay Rafac
CPC classification number: H05G2/006 , H01S3/10069 , H01S3/107 , H01S3/11 , H01S3/136 , H01S3/2232 , H01S3/2308 , H01S2301/08 , H05G2/003 , H05G2/008
Abstract: A method and apparatus for control of a dose of extreme ultraviolet (EUV) radiation generated by a laser produced plasma (LPP) EUV light source. Each laser pulse is modulated to be of a width that is determined to be sufficient to allow for extraction of a suitable uniform amount of energy in the laser source gain medium; in some embodiments the suitable uniform amount of energy to be extracted may be selected to avoid self-lasing. The EUV energy created by each pulse is measured and total EUV energy created by the fired pulses determined, and a desired energy for the next pulse is determined based upon whether the total EUV energy is greater or less than a desired average EUV energy times the number of pulses. The energy of the next pulse is modulated, either by modulating its magnitude or by modulating the amplification of the pulse by one or more amplifiers, but without decreasing the determined width of the laser pulse.
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公开(公告)号：US20170237221A1
公开(公告)日：2017-08-17
申请号：US15504508
申请日：2015-08-17
Applicant: AMPHOS GMBH , AMOTRONICS UG
Inventor： Jan DOLKEMEYER , Claus SCHNITZLER , Torsten MANS , Stefan VERSE , Martin HESSING , Jürgen MARTINI
CPC classification number: H01S3/107 , B23K26/0624 , H01S3/0085 , H01S3/11 , H01S5/0085
Abstract: The present invention relates to a system for modulating laser pulses by means of an electro-optical modulator which is operated by means of a pulsed modulation voltage. A voltage converter mounted upstream of the modulator converts a pulsed modulated switching voltage at an output voltage level to the modulation voltage that is higher than the output voltage level. The invention further relates to a method for modulating laser pulses.
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公开(公告)号：US20170207603A1
公开(公告)日：2017-07-20
申请号：US15275590
申请日：2016-09-26
Applicant: Infinera Corporation
Inventor： Peter W. Evans , Fred A. Kish, JR. , Vikrant Lal , Scott Corzine , Mingzhi Lu
CPC classification number: H01S5/068 , H01S3/07 , H01S3/107 , H01S5/0085 , H01S5/02276 , H01S5/026 , H01S5/0612 , H01S5/06256 , H01S5/101 , H01S5/1025 , H01S5/141 , H01S5/22 , H01S5/3013 , H01S5/4006 , H01S5/4031 , H01S5/4062 , H01S5/4087 , H04B10/503 , H04B10/506 , H04J14/02
Abstract: Consistent with the present disclosure, a compact laser with extended tunability (CLET) is provided that includes multiple segments or sections, at least one of which is curved, bent or non-collinear with other segments, so that the CLET has a compact form factor either as a singular laser or when integrated with other devices. The term CLET, as used herein, refers to any of the laser configurations disclosed herein having mirrors and a bent, angled or curved part, portion or section between such mirrors. If bent, the bent portion is preferably oriented at an angle of at least 30 degrees relative to other portions of the CLET. Alternatively, the curve or bend portion may be distributed over different sections of the CLET over a series of arcs, for example. The waveguide extending between the mirrors is continuous, such that light propagating along the waveguide is not divided or split. The waveguide also constitutes a continuous waveguide path.
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公开(公告)号：US09684077B2
公开(公告)日：2017-06-20
申请号：US14618879
申请日：2015-02-10
Applicant: Lockheed Martin Corporation
Inventor： Roy D. Mead , John D. Minelly , Eric C. Honea
IPC: H01S3/10 , G01S17/89 , H01S3/067 , H01S3/16 , G01S7/481 , H04B10/80 , H01S3/115 , G01B11/28 , G01B11/25 , H01S3/08 , H01S3/094 , H01S3/107 , H01S3/11 , H01S3/00
CPC classification number: G01S17/89 , G01B11/2518 , G01B11/28 , G01S7/4813 , H01S3/0078 , H01S3/0092 , H01S3/06754 , H01S3/06791 , H01S3/08027 , H01S3/094003 , H01S3/107 , H01S3/11 , H01S3/115 , H01S3/1616 , H04B10/80 , H04B10/808
Abstract: An apparatus, method and associated fiber-laser architectures for high-power pulsed operation and pumping wavelength-conversion devices. Some embodiments generate blue laser light by frequency quadrupling infrared (IR) light from Tm-doped gain fiber using non-linear wavelength conversion. Some embodiments use a fiber MOPA configuration to amplify a seed signal from a semiconductor laser or ring fiber laser. Some embodiments use the frequency-quadrupled blue light for underwater communications, imaging, and/or object and anomaly detection. Some embodiments amplitude modulate the IR seed signal to encode communication data sent to or from a submarine once the modulated light has its wavelength quartered. Other embodiments transmit blue-light pulses in a scanned pattern and detect scattered light to measure distances to objects in a raster-scanned underwater volume, which in turn are used to generate a data structure representing a three-dimensional rendition of the underwater scene being imaged for viewing by a person or for other software analysis.
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公开(公告)号：US20170093116A1
公开(公告)日：2017-03-30
申请号：US15087307
申请日：2016-03-31
Applicant: Hisense Broadband Multimedia Technologies, Ltd. , Hisense USA Corp. , Hisense International Co., Ltd.
Inventor： Qiang ZHANG , Qisheng ZHAO , Shihai YANG
CPC classification number: H01S3/136 , H01S3/0085 , H01S3/0912 , H01S3/094076 , H01S3/10 , H01S3/107 , H01S5/0085 , H01S5/06213 , H04B10/00
Abstract: The disclosure provides an optical module, including a laser, the laser including a light emitting region and a modulation region, and light emitted by the light emitting region emitting toward the modulation region; a first driver circuit, the first driver circuit being connected to the light emitting region, so that the light emitting region emits light with adjusted optical power; and a second driver circuit, the second driver circuit being connected to the modulation region, so that the modulation region changes the optical power of the light emitted from the light emitting region.
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