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公开(公告)号：US20240243541A1
公开(公告)日：2024-07-18
申请号：US18337713
申请日：2023-06-20
发明人： Christian Keyser , Micah Raab
CPC分类号： H01S3/1083 , G02F1/3534 , G02F1/3548 , G02F1/361 , G02F1/392 , G02F1/395 , H01S3/06729 , H01S3/1086 , H01S3/20
摘要： A fluid filled fiber for a quasi-phase matched generator and a laser incorporating such a fluid filled fiber. The laser has a liquid filled fiber with charge transfer molecules dissolved in a solvent. The liquid of the liquid filled fiber comprises or consists essentially of highly polar liquids and/or charge transfer molecules having relatively high molecular dipole values.
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公开(公告)号：US20240069407A1
公开(公告)日：2024-02-29
申请号：US17900688
申请日：2022-08-31
发明人： Matthew Wade Puckett , Chad Fertig , Matthew Robbins , Jad Salman
CPC分类号： G02F1/3548 , G02F1/3775 , H01S3/0092 , H01S3/109
摘要： A nonlinear wave mixing system with grating assisted phase matching is provided. The system includes a pump laser and a nonlinear waveguide. The pump laser is used to generate pump light at a select wavelength. The nonlinear waveguide is configured to generate produced light from the pump light that is directed into the nonlinear waveguide. The nonlinear waveguide includes at least one backward grating that is configured to diffract the produced light in a backward direction relative to a direction the produced light travels in the nonlinear waveguide to reach the backward grating. The backward grating having a grating momentum that generates counter-propagating phase matching in the produced light.
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3.发明授权公开(公告)号：US11841599B2
公开(公告)日：2023-12-12
申请号：US17451711
申请日：2021-10-21
申请人： McMaster University
发明人： Chang-qing Xu , Liam Flannigan , Joshua Kneller
CPC分类号： G02F1/39 , G02F1/3534 , G02F1/3548 , H01S3/109 , H01S3/1083
摘要： Optical transmitters and optical receivers utilizing long wave infrared light for use with an earth-orbiting satellite communication system, and a structure including an intracavity optical nonlinear process, are described herein. The transmitters include a pumping laser diode with a fast-axis collimating lens and a pumping wavelength λ0, operating in a continuous wavelength (CW) mode. The transmitters also include a laser cavity having a beam combiner or a dichroic mirror, a laser crystal with a lasing wavelength λ1 and a difference frequency generation orientation patterned semiconductor to generate long wave-IR light. The transmitters also include a second laser at a wavelength λ2, operating in a modulation mode. The receivers have a similar structure to the transmitters, utilizing a sum frequency generation orientation patterned semiconductor to convert long wave-IR light into the short wave-IR.
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公开(公告)号：US12085836B2
公开(公告)日：2024-09-10
申请号：US18010899
申请日：2020-07-29
发明人： Takushi Kazama , Takeshi Umeki , Takahiro Kashiwazaki , Osamu Tadanaga , Koji Embutsu , Nobutatsu Koshobu , Asuka Inoue , Ryoichi Kasahara
CPC分类号： G02F1/392 , G02F1/3501 , G02F1/39 , G02F1/395 , H01S3/0092 , H01S3/1086 , G02F1/35 , G02F1/3548 , G02F1/3551
摘要： An optical amplifier of the present disclosure includes a Raman amplification unit and a parametric amplification unit that is configured of a second-order nonlinear element including a PPLN waveguide. In the optical amplifier, second harmonic lights are generated from a fundamental wave light having a wavelength that is slightly detuned to a shorter wavelength side with respect to a phase matching wavelength of the second-order nonlinear element, and is utilized as excitation light for the parametric amplification unit. By utilizing the excitation light based on the fundamental wave light of the wavelength detuned from the phase matching wavelength, a phase matching curve can be obtained in a wide band in a difference frequency generation (DFG) process of the second-order nonlinear element. The reduction in conversion efficiency of the wavelength near the excitation light in the parametric amplification unit is compensated by the Raman amplification unit.
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公开(公告)号：US20240103337A1
公开(公告)日：2024-03-28
申请号：US18260020
申请日：2021-12-29
发明人： Sergey Vasilyev , Mike Mirov , Igor Moskalev
CPC分类号： G02F1/3528 , G02F1/3548 , G02F1/3551 , G02F2203/11
摘要： Controlling a low-threshold femtosecond supercontinuum (fs SCG) in a bulk nonlinear material (BNLM) with a positive thermo-optic coefficient (dn/dT>0 K−1) is provided by coupling light at a first wavelength output by a fs oscillator at a full pulse repetition PRR into the BNLM. The coupling of light produces a nonlinear lens of the coupled beam in the BNLM which is insufficient to provide intensity of the light sufficient to reach ta threshold of the fs SCG. To raise the pulse energy and reach the SCG threshold, light at a second wavelength different from the first wavelength is absorbed in the BNLM to form a thermal lens in the BNLM which assist the nonlinear lens in creating the SCG.
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公开(公告)号：US11899338B2
公开(公告)日：2024-02-13
申请号：US17991198
申请日：2022-11-21
申请人： KLA Corporation
发明人： Yung-Ho Alex Chuang , Kelly Mauser , Baigang Zhang , Xuefeng Liu , John Fielden , Yinying Xiao-Li , Elena Loginova
CPC分类号： G02F1/3534 , G01N21/4738 , G02F1/3507 , G02F1/3542 , G02F1/3548 , G02F1/3551 , G02F1/37 , G02F1/392 , G01N21/9501 , G01N2201/06113 , G02F2203/11 , H01S3/1625 , H01S3/1636
摘要： A nonlinear crystal including stacked strontium tetraborate SrB4O7 (SBO) crystal plates that are cooperatively configured to create a periodic structure for quasi-phase-matching (QPM) is used in the final frequency doubling stage of a laser assembly to generate laser output light having a wavelength in the range of about 180 nm to 200 nm. One or more fundamental laser beams are frequency doubled, down-converted and/or summed using one or more frequency conversion stages to generate an intermediate frequency light with a corresponding wavelength in the range of about 360 nm to 400 nm, and then the final frequency converting stage utilizes the nonlinear crystal to double the frequency of the intermediate frequency light to generate the desired laser output light at high power. Methods, inspection systems, lithography systems and cutting systems incorporating the laser assembly are also described.
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7.发明公开公开(公告)号：US20230367177A1
公开(公告)日：2023-11-16
申请号：US18196764
申请日：2023-05-12
申请人： NTT RESEARCH, INC.
发明人： Jatadhari MISHRA , Marc JANKOWSKI , Alexander Y. HWANG , Hubert S. STOKOWSKI , Timothy P. McKENNA , Amir H. SAFAVI-NAEINI , Martin M. FEJER
CPC分类号： G02F1/3551 , G02F1/395 , G02F1/392 , G02F1/3546 , G02F1/3548 , G02F2202/20 , G02F2202/07
摘要： In some embodiments, a device for generating mid-infrared radiation is provided. The device may include a thin film quadratic nonlinear waveguide formed on a mid-infrared transparent cladding by a thin film material of a predetermined film thickness, the waveguide having a predetermined etch depth and a predetermined top width. At least one of the predetermined film thickness, the predetermined etch depth, and the predetermined top width may be tuned for the device to generate a coherent idler wave as a mid-infrared radiation from a fixed pump wave and a tunable signal wave.
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公开(公告)号：US20240255829A1
公开(公告)日：2024-08-01
申请号：US18427721
申请日：2024-01-30
申请人： Cornell University
发明人： Jeffrey A. Moses , Noah Flemens , Nuno Vinicius
CPC分类号： G02F1/354 , G02F1/3548 , G02F1/3553 , G02F1/3558 , G02F1/37 , H01S3/0092
摘要： A third-harmonic generation method includes frequency-quadrupling a fundamental optical beam via cascaded second-harmonic generation to yield a fourth-harmonic optical beam. The method also includes down-converting the fourth-harmonic optical beam to yield a third-harmonic optical beam. A third harmonic generator includes a monolithic optical element having nonzero quadratic electric susceptibility to (i) frequency-quadruple a fundamental optical beam via cascaded second-harmonic generation, and (ii) down-convert a fourth-harmonic optical beam to yield a third-harmonic optical beam.
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公开(公告)号：US20240192574A1
公开(公告)日：2024-06-13
申请号：US18584710
申请日：2024-02-22
发明人： Matthew Wade Puckett , Chad Fertig , Matthew Robbins , Jad Salman
CPC分类号： G02F1/3548 , G02F1/3775 , H01S3/0092 , H01S3/109
摘要： A nonlinear wave mixing system with grating assisted phase matching is provided. The system includes a pump laser and a nonlinear waveguide. The pump laser is used to generate pump light at a select wavelength. The nonlinear waveguide is configured to generate produced light from the pump light that is directed into the nonlinear waveguide. The nonlinear waveguide includes at least one backward grating that is configured to diffract the produced light in a backward direction relative to a direction the produced light travels in the nonlinear waveguide to reach the backward grating. The backward grating having a grating momentum that generates counter-propagating phase matching in the produced light.
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公开(公告)号：US20240118586A1
公开(公告)日：2024-04-11
申请号：US18045189
申请日：2022-10-10
CPC分类号： G02F1/395 , G02F1/3548
摘要： An electro-optical modulating device and method that provides efficient control of the nonlinear propagation constant in an optical waveguide are featured. The electro-optical modulating device provides large wavelength tunability of the generated entangled photon pairs in real-time by using an applied external bias voltage. The electro-optical modulating device uses gate-tunable material at locations near the optical waveguide. The application of an external bias voltage creates a variable field-effect which in turn varies the optical dielectric properties of the waveguide. The result is a compact active, highly efficient wavelength-tunable integrated quantum photonic device for tunable entangled photon pair generation using an external bias voltage.
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