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公开(公告)号：US11747710B2
公开(公告)日：2023-09-05
申请号：US17878325
申请日：2022-08-01
Applicant: UT-Battelle, LLC
Inventor： Joseph M. Lukens , Nicholas A. Peters , Raphael C. Pooser
CPC classification number: G02F1/3544 , G02F1/3501 , G02F1/39 , G02F1/3507 , G02F1/392 , G02F2203/13
Abstract: A nonlinear fiber interferometer is disclosed suitable for fiber sensor and other applications. A first nonlinear fiber section amplifies probe and conjugate sidebands of a pump through four-wave mixing. A second section introduces a phase shift to be measured, for example from a sensor. A third nonlinear fiber section amplifies with phase-sensitive gain to increase signal-to-noise ratio. Based on phase-sensitive output power of probe and/or conjugate components, the phase shift can be measured. Superior performance can be obtained by balancing gain between the (first and third) nonlinear sections. Non-fiber, for example photonic integrated circuit, embodiments are disclosed. Differential sensing, alternative detection schemes, sensing applications, associated methods, and other variations are disclosed.
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公开(公告)号：US11671063B2
公开(公告)日：2023-06-06
申请号：US17756481
申请日：2020-12-13
Applicant: The University of Chicago
Inventor： Aashish Clerk , Alexander McDonald
Abstract: Optimally detuned parametric amplification amplifies a signal in a resonator that is driven off-resonance, with respect to a signal mode, using a far-detuned pump. This pump establishes a parametric drive strength, and is “far-detuned” in that its detuning from the signal mode is greater than the drive strength. The amplitude and frequency of the pump are chosen so that the eigenfrequency of the resulting Bogoliobov mode matches a photonic loss rate of the Bogoliobov mode. In this case, a signal coupled into the Bogoliobov mode will be amplified with a gain that is broader and flatter than that achieved with conventional parametric amplification, and is not limited by a gain-bandwidth product. Optimally detuned parametric amplification may be used for degenerate or non-degenerate parametric amplification, and may be used to amplify microwaves, light, electronic signals, acoustic waves, or any other type of signal that can be amplified using conventional parametric amplification.
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公开(公告)号：US12080984B2
公开(公告)日：2024-09-03
申请号：US17412339
申请日：2021-08-26
Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
Inventor： Michael H. Helle
IPC: H01S3/00 , G02B5/18 , G02F1/39 , H01S3/1106
CPC classification number: H01S3/0057 , G02B5/1819 , G02F1/39 , G02F1/392 , H01S3/0085 , H01S3/1106
Abstract: A laser architecture for selectively producing short high-energy laser pulses having octave-spanning, continuous tunability. Two oppositely chirped pulses are used in combination with a pair of tunable pulse stretcher/compressors to produce a short, high-energy, tunable, broadband pulse.
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14.发明公开公开(公告)号：US20240291220A1
公开(公告)日：2024-08-29
申请号：US18658286
申请日：2024-05-08
Applicant: Gigaphoton Inc.
Inventor： Seiji NOGIWA , Takayuki OSANAI
CPC classification number: H01S3/0092 , G02F1/3507 , G02F1/3534 , G02F1/3551 , G02F1/392 , G03F7/2002 , G03F7/70025 , G03F7/70041 , G03F7/70575 , H01S5/0085 , G02B27/141 , G02F2203/11
Abstract: A laser system includes a first laser outputting first laser light, an optical intensity changer outputting first pulse laser light, a modulator widening spectral linewidth of the first laser light or the first pulse laser light, an optical fiber amplifier amplifying the first pulse laser light and outputting second pulse laser light, a second laser outputting second laser light, an optical parametric amplifier amplifying the second laser light and outputting third pulse laser light, a wavelength converter outputting fourth pulse laser light using the second and third pulse laser light, an amplification section amplifying the fourth pulse laser light and outputting fifth pulse laser light, and a processor controlling a modulation signal such that the fifth pulse laser light having target spectral linewidth is generated, and controlling the center wavelength of the second laser light such that the fifth pulse laser light having a target center wavelength is generated.
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公开(公告)号：US20240239519A1
公开(公告)日：2024-07-18
申请号：US18289703
申请日：2021-05-07
Applicant: SKY Perfect JSAT Corporation , RIKEN
Inventor： Tadanori Fukushima , Kazuma Adachi , Satoshi Wada , Toshikazu Ebisuzaki , Takayo Ogawa , Katsuhiko Tsuno
CPC classification number: B64G1/1081 , G02F1/353 , G02F1/392
Abstract: A thrust generating device according to the present invention is a thrust generating device for irradiating a target with a laser beam to generate thrust for the target, the thrust generating device including: a laser beam generating device that generates a first laser beam having a first wavelength and a second laser beam having a second wavelength different from the first wavelength; and an irradiation device that simultaneously irradiates the target with the first laser beam and the second laser beam. The second wavelength may be a wavelength having a high absorptivity in the target than the first wavelength, and the intensity of the second laser beam may be lower than that of the first laser beam. Further, the second laser beam may be generated by converting the wavelength of the first laser beam.
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Patent Agency Ranking
公开(公告)号：US20240142853A1
公开(公告)日：2024-05-02
申请号：US18280529
申请日：2022-02-09
Applicant: ASML NETHERLANDS B.V.
Inventor： Yongfeng NI , Willem Richard PONGERS
CPC classification number: G02F1/3532 , G02F1/3536 , G02F1/392 , G02F1/395 , G02F1/3528 , G02F2202/32
Abstract: A multiple wavelength light source device and associated method for generating output radiation that has a plurality of discrete output wavelength bands. The multiple wavelength light source device includes a pump radiation source arrangement configured to generate input radiation including at least a first frequency component and a second frequency component; and a hollow-core photonic crystal fiber configured to confine a working medium. The hollow-core photonic crystal fiber is configured to receive the input radiation and to generate the plurality of discrete output wavelength bands distributed over a wavelength range of interest via a seed-assisted cascaded four wave mixing (FWM) process in the working medium.
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公开(公告)号：US11822208B2
公开(公告)日：2023-11-21
申请号：US17839417
申请日：2022-06-13
Applicant: Jeffrey G. Manni
Inventor： Jeffrey G. Manni
CPC classification number: G02F1/39 , G02F1/3501 , G02F1/3503 , G02F1/392
Abstract: The invention is a nonlinear Raman optical device generating zig-zag radiation beam paths in a nonlinear medium having dichroic coatings reflecting at a pump radiation wavelength, with a first mirror between an injected beam of pump radiation and a first end of the nonlinear medium and a second mirror at a second end of the nonlinear medium, the second mirror being partially reflecting at a first Stokes wavelength of the pump radiation.
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公开(公告)号：US11762261B2
公开(公告)日：2023-09-19
申请号：US17445785
申请日：2021-08-24
Applicant: SHAN DONG UNIVERSITY
Inventor： Zhengping Wang , Xuezhi Zhao , Fapeng Yu , Xun Sun , Xinguang Xu
CPC classification number: G02F1/392 , G02F1/353 , G02F1/3544 , G02F1/39 , G02F1/395 , H01S3/0092 , G02F1/377
Abstract: The invention is related to a parametric light generation method and its application and belongs to the technical field of laser and nonlinear optics. The generation method comprises steps as follows: a nonlinear optical material that meets the sum-frequency phase-matched conditions, namely it shall satisfy the energy conservation condition ωp+ωi=ωs and the momentum conservation condition npωp+niωi=nsωs simultaneously, is provided; laser light with a wavelength of λp is injected into the said nonlinear optical material as pump light; then, the material will output signal light with a wavelength of λS, namely the tunable sum-frequency parametric light. With sum-frequency as the basic principle, the invention can realize frequency up-conversion and obtain visible and UV light sources through simple infrared light sources easily.
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公开(公告)号：US20230185160A1
公开(公告)日：2023-06-15
申请号：US17924638
申请日：2021-05-13
Inventor： Santosh KUMAR , He ZHANG , Yuping HUANG , Ting BU
CPC classification number: G02F1/37 , G06E1/02 , G02F1/3558 , G02F1/3551 , G02F1/392 , G02F2202/20
Abstract: An optical computation system includes a light source configured to produce a pump beam, an optical modulator configured to modulate the pump beam based on the modulation mask to generate a modulated beam, a non-linear medium configured to convert a portion of the modulated beam to a second harmonic (SH) beam and to produce an output including the SH beam and an unconverted portion of the pump beam, and a dichroic mirror configured to receive the output of the non-linear medium and to decouple the SH beam and the unconverted portion of the pump beam, a detector configured to detect a first optical power of the unconverted portion of the pump beam and to detect a second optical power of the SH beam, and a controller configured to generate an updated modulation mask based on the first and second optical powers for transmission to the optical modulator.
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公开(公告)号：US20240361666A1
公开(公告)日：2024-10-31
申请号：US18681646
申请日：2022-05-16
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Takashi SEKINE , Yoshinori TAMAOKI
CPC classification number: G02F1/354 , G02F1/392 , H01S3/0092 , H01S3/2391
Abstract: A laser amplification device includes an amplification unit and a phase adjustment unit; the amplification unit includes a signal light source, an excitation light source, and a nonlinear optical crystal; the nonlinear optical crystal has a plurality of spatially different crystal portions; the signal light source, the excitation light source, and the nonlinear optical crystal are arranged such that signal light and excitation light are simultaneously incident on the plurality of crystal portions and that the elements of at least one of a set of the angles of incidence between the crystal axes of the plurality of crystal portions and the signal light and a set of the angles of incidence between the crystal axes of the plurality of crystal portions and the excitation light are different.
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