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1. 发明公开

US20240364069A1 Laser Apparatus For Excitation Of Rubidium Atoms In A Quantum Processor 审中-公开
公开(公告)号：US20240364069A1
公开(公告)日：2024-10-31
申请号：US18685770
申请日：2022-08-19
申请人： Pasqal
发明人： Torben Pöpplau , Lucas Béguin , Arnaud Dumas
IPC分类号： H01S3/067 , G06N10/40 , H01S3/00 , H01S3/16 , H01S3/23
CPC分类号： H01S3/0675 , G06N10/40 , H01S3/0092 , H01S3/1608 , H01S3/1616 , H01S3/1618 , H01S3/2391
摘要： According to a first aspect, the present disclosure relates to a laser apparatus (210) for excitation of Rubidium (Rb) atoms in a quantum processor comprising an Er-doped DFB fiber laser (201) for emitting light at a wavelength of around 1560 nm; at least a first Yb-doped DFB fiber laser (202) for emitting light at a wavelength of around 1090 nm; a fiber-coupled laser source (203) for emitting light at a wavelength of around 1013 nm; a first fiber-coupled SHG device (301) configured to receive said light from said Yb-doped DFB fiber laser (202) and to produce light at a wavelength of around 545 nm; at least a first fiber-coupled DFG device (302) configured to receive a first part of said light from said Er-doped DFB fiber laser (201) and said light from said first fiber-coupled SHG device (301) and produce light at a wavelength of around 840 nm; a second fiber-coupled SHG device (303) configured to receive said light from said first fiber-coupled DFG device (302) and produce light at a wavelength of around 420 nm; a third fiber-coupled SHG device (304) configured to receive a second part of said light from said Er-doped DFB fiber laser (201) and produce light at a wavelength of around 780 nm, wherein said light at wavelength of around 780 nm is configured to produce MOT laser beams (111, 112, 113) for magneto-optical trapping of the Rb atoms and an optical pumping laser beam (120) for optical pumping of the Rb atoms; wherein said light at a wavelength of around 420 nm and said light at a wavelength of around 1013 nm are configured to produce Rydberg laser beams (141, 142) for transition of Rb atoms to Rydberg states.

2. 发明公开

US20240339803A1 FIBER LASER WITH INTRACAVITY FREQUENCY SHIFT AND BANDPASS FILTER 审中-公开
公开(公告)号：US20240339803A1
公开(公告)日：2024-10-10
申请号：US18579458
申请日：2021-07-13
申请人： Ampliconyx Oy
发明人： Regina Gumenyuk , Xinyang Liu
IPC分类号： H01S3/1118 , H01S3/067 , H01S3/106
CPC分类号： H01S3/1118 , H01S3/067 , H01S3/1068 , H01S2301/085
摘要： Various example embodiments relate to the field of fiber laser technology. A fiber laser may comprise an active optical fiber configured to amplify an optical signal and a frequency shifter, which may be optically coupled to the active optical fiber. The frequency shifter may be configured to cause a frequency shift to the optical signal in a first direction. The fiber laser may further comprise a bandpass filter, which may be optically coupled to the frequency shifter. The bandpass filter and the active optical fiber may be configured to induce a reverse frequency shift to the optical signal in a second direction opposite to the first direction.

3. 发明公开

US20240332886A1 SYSTEM AND METHODS FOR A MULTIWAVELENGTH ERBIUM-DOPED FIBER SINGLE RING CAVITY LASER 审中-公开
公开(公告)号：US20240332886A1
公开(公告)日：2024-10-03
申请号：US18192764
申请日：2023-03-30
申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
发明人： Khurram Karim QURESHI , Muhammad Jawad MIRZA , Salman Abdul GHAFOOR , Ahmad ATIEH
IPC分类号： H01S3/136 , G02F1/21 , H01S3/00 , H01S3/067 , H01S3/16
CPC分类号： H01S3/136 , G02F1/212 , H01S3/0064 , H01S3/06791 , H01S3/1608
摘要： A multiwavelength erbium-doped fiber laser (EDFL) including a single ring cavity, a wave division multiplexer (WDM) coupler, and a pump laser. The pump laser injects a pump laser beam into the single ring cavity. The multiwavelength EDFL includes an erbium doped fiber, an optical isolator (ISO), and a fiber coupler. The erbium doped fiber amplifies the pump laser beam and generates an amplified laser beam. The fiber coupler divides the amplified laser beam into an output laser beam and a laser beam retained in the single ring cavity. The multiwavelength EDFL includes a tunable optical filter (TOF) and an out of cavity comb filter (CF) having a dual-drive Mach-Zehnder modulator (DD-MZM). The TOF receives the laser beam retained in the single ring cavity and filter the retained laser beam to a desired wavelength. The DD-MZM receives the output laser beam and divides the output laser beam into multiple wavelengths.

4. 发明授权

US12107379B2 Laser device 有权
公开(公告)号：US12107379B2
公开(公告)日：2024-10-01
申请号：US17422267
申请日：2020-02-27
申请人： Fujikura Ltd.
发明人： Shinichi Sakamoto , Yasuto Chiba , Wataru Kiyoyama , Yutaka Yamaguchi , Takashi Hasunuma
IPC分类号： H01S3/094 , B23K26/70 , H01S3/00 , H01S3/067
CPC分类号： H01S3/094053 , B23K26/705 , H01S3/0014 , H01S3/005 , H01S3/06708
摘要： A laser device includes at least one light source; a delivery fiber that is configured to propagate of laser light emitted from the light source; and a first light detection unit and a second light detection unit configured to detect a part of light propagating in a direction opposite to a propagation direction of the laser light through the delivery fiber. The first light detection unit detects first light included in a wavelength band of visible light. The second light detection unit detects second light included in a wavelength band of near-infrared light.

5. 发明公开

US20240322514A1 SYSTEM AND METHOD FOR ALIGNMENT OF BEAMS OF COHERENT BEAM ARRAY 审中-公开
公开(公告)号：US20240322514A1
公开(公告)日：2024-09-26
申请号：US18269621
申请日：2022-02-01
申请人： RAFAEL ADVANCED DEFENSE SYSTEMS LTD.
发明人： Daniel GOLUBCHIK
IPC分类号： H01S3/00 , G02B27/12 , H01S3/067 , H01S3/094 , H01S3/23
CPC分类号： H01S3/0071 , G02B27/123 , H01S3/0014 , H01S3/094076 , H01S3/2383 , H01S3/067 , H01S3/094061
摘要： A CBC system includes an array of beam sources generating coherent beams directed towards a target. The beam sources have associated adjustable phase modulators and beam steering arrangements. For each of the beams in a subset of the beams, the corresponding beam steering arrangement is actuated to steer the beam, and the corresponding phase modulator is actuated to modulate a current phase of the beam between at least three phase states. A detector monitors an intensity parameter that varies as a function of an intensity of radiation impinging on the target. A controller calculates, for each of the beams in the subset, a current value that is representative of a relative intensity of the beam based at least in part on the monitored intensity parameter at each of the at least three phase states. The calculated value is indicative of a current position of the beam relative to the target.

6. 发明授权

US12099235B2 Amplifying fiber and optical amplifier 有权
公开(公告)号：US12099235B2
公开(公告)日：2024-09-24
申请号：US17427248
申请日：2020-01-30
申请人： Nippon Telegraph and Telephone Corporation
发明人： Hirotaka Ono , Yutaka Miyamoto
IPC分类号： G02B6/02 , G02B6/028 , H01S3/067
CPC分类号： G02B6/028 , H01S3/067
摘要： An amplification fiber includes a core which is doped with an erbium ion and a cladding which surrounds the core and has a refractive index lower than a refractive index of the core, and a relative refractive index difference Δn51 between the core and the cladding is not more than a smaller one of values of a relative refractive index difference Δn1 expressed as a predetermined expression related to a radius a of the core and a relative refractive index difference Δn2 expressed as a predetermined expression related to the radius a of the core.

7. 发明公开

US20240291222A1 LASER AMPLIFICATION MEDIUM AND LASER AMPLIFICATION MEDIUM MANUFACTURING METHOD 审中-公开
公开(公告)号：US20240291222A1
公开(公告)日：2024-08-29
申请号：US18568008
申请日：2022-02-15
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD. , RIKEN
发明人： Koichi HAMAMOTO , Satoshi WADA , Takayo OGAWA
IPC分类号： H01S3/067 , H01S3/00 , H01S3/02
CPC分类号： H01S3/06754 , H01S3/005 , H01S3/025
摘要： A laser amplification medium includes: a clad part; a first core part and a second core part; a virtual first, second, and third layers. The first core part and the second core part extend parallel to an axis direction. The first layer includes the first core part, the second core part, and a part of the clad part. The second layer and the third layer include a part of the clad part. Each side face of the first core part and the second core part includes a first planar portion and a second planar portion. The first planar portion is included in a first surface of the first layer, the first surface being a virtual bonding interface with the second layer. The second planar portion is included in a second surface of the first layer, the second surface being a virtual bonding interface with the third layer.

8. 发明授权

US12074407B2 Method, device and system for dynamically controlling gain of Raman optical fiber amplifier 有权
公开(公告)号：US12074407B2
公开(公告)日：2024-08-27
申请号：US17273574
申请日：2018-12-26
申请人： Accelink Technologies Co., Ltd
发明人： Cuihong Zhang , Chengpeng Fu , Jintao Tao , Hao Zhang , Lijing Cheng
IPC分类号： H01S3/13 , H01S3/067 , H01S3/091 , H01S3/094 , H01S3/10 , H01S3/30
CPC分类号： H01S3/13013 , H01S3/06754 , H01S3/0912 , H01S3/094003 , H01S3/094096 , H01S3/10069 , H01S3/302 , H01S2301/02
摘要： Disclosed are a method, device and system for dynamically controlling a gain of a Raman optical fiber amplifier. The method comprises: determining whether a target gain falls within a gain mask range; if the target gain falls within the gain mask range, directly locking a gain to the target gain; and if the target gain falls outside the gain mask range, locking the gain to a corresponding maximum gain in the gain mask range, and gradually increasing the locked gain according to a preset first step length until the target gain is reached or until at least one pump laser reaches a maximum output power. The invention enables an optical fiber amplifier to respond quickly to a change in an input optical signal, ensures gain stability, and ensures that no power overshoot or undershoot occurs in the non-switched optical channels in an optical path. Moreover, the invention minimizes an amount of time required to complete switching between gains.

9. 发明公开

US20240275118A1 Single Pass Optical Amplifer 审中-公开
公开(公告)号：US20240275118A1
公开(公告)日：2024-08-15
申请号：US18109661
申请日：2023-02-14
申请人： Metrohm Spectro, Inc.
发明人： Meg Mahat , Greg W. Charache
IPC分类号： H01S3/067 , H01S3/094 , H01S3/16
CPC分类号： H01S3/06758 , H01S3/094003 , H01S3/1603
摘要： A narrow-linewidth, single-spatial-mode single-pass fiber-amplifier based light source is described that provides high-efficiency and high reliability. The major components of the design include: a narrow-linewidth single-spatial-mode semiconductor seed laser, a seed-laser PM optical isolator, a multimode semiconductor pump laser, a fiber-based PM combiner, an active gain fiber, and a frequency doubling crystal. The design is particularly suited for use as a high-power light source for numerous scientific and engineering applications, including: a Raman spectroscopic imaging microscope system and atomic clocks/atomic trapping and cooling.

10. 发明公开

US20240266796A1 SUPER-MODE SELECTIVE OPTICAL UNIT 审中-公开
公开(公告)号：US20240266796A1
公开(公告)日：2024-08-08
申请号：US18574292
申请日：2022-06-22
申请人： B.G.NEGEV TECHNOLOGIES AND APPLICATIONS LTD.,AT BEN-GURION UNIVERSITY
发明人： Amiel Ishaaya , Yakov Greenberg
IPC分类号： H01S3/067 , H01S3/10
CPC分类号： H01S3/06737 , G02B6/02042 , H01S3/06733
摘要： A super-mode selective optical unit that may include (i) a multicore fiber (MCF) that comprises one or more claddings, and multiple doped fiber cores located within one of the one or more claddings; and (ii) a multimode fiber (MMF) that comprises a first MMF end and a second MMF end; wherein the first MMF end is configured to receive optical signals from the MCF; wherein the MMF is configured to attenuate in-phase super-mode components of the optical signals of the MCF and to amplify out-of-phase components of the optical signals.

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