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61.发明申请公开(公告)号：US20190305508A1
公开(公告)日：2019-10-03
申请号：US16446662
申请日：2019-06-20
申请人： Gigaphoton Inc.
发明人： Takashi ONOSE , Osamu WAKABAYASHI
IPC分类号： H01S3/23 , H01S3/108 , G02F1/35 , G02F1/355 , H01S3/109 , H01S3/067 , H01S3/10 , H01S3/11 , H01S3/115 , H01S3/16 , H01S3/131
摘要： A solid state laser device includes a seed laser that outputs continuous wave laser seed light, a light intensity changeable unit that changes a light intensity thereof and outputs seed pulse light, a CW excitation laser that outputs continuous wave excitation light, an amplifier that amplifies the seed pulse light and outputs amplified light based on an amplification gain increased by the excitation light, a wavelength conversion unit that converts a wavelength of the amplified light and outputs harmonic light, and a light intensity control unit that allows the light intensity changeable unit to output the seed pulse light after a certain time elapsed from an input of an external trigger signal each time the signal is input and output suppression light that suppresses an increase of the amplification gain in a period after an output of the seed pulse light until an input of a next external trigger signal.
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公开(公告)号：US20190280454A1
公开(公告)日：2019-09-12
申请号：US16292381
申请日：2019-03-05
申请人： Toshiyuki IKEOH , Yasuhiro Higashi , Yoshio Wada , Takumi Satoh , Hiroaki Minamide , Kouji Nawata , Yuma Takida
发明人： Toshiyuki IKEOH , Yasuhiro Higashi , Yoshio Wada , Takumi Satoh , Hiroaki Minamide , Kouji Nawata , Yuma Takida
摘要： A pulsed electromagnetic-wave generator includes an excitation light source, a laser resonator, a pulse generating unit, and a wavelength converting unit. Excitation light from the excitation light source enters the laser resonator. The pulse generating unit is configured to generate a pulsed light group including at least two or more pulses with different frequencies (ω) and different oscillation timings (t) in one excitation process of the excitation light source, an oscillation frequency difference (Δω) between the pulses in the pulsed light group being an integral multiple of a Free Spectral Range (FSR) of the laser resonator. The pulsed light group enters the wavelength converting unit. The wavelength converting unit is configured to generate a pulsed electromagnetic wave in which a wavelength of each pulse in the pulsed light group is converted.
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公开(公告)号：US20190280450A1
公开(公告)日：2019-09-12
申请号：US16296586
申请日：2019-03-08
发明人： Oliver H. Heckl , Georg Winkler , Jakob Fellinger
摘要： A method for generating a single-cavity dualcomb or multicomb for laser spectroscopy, the method comprising the steps of providing a laser system comprising a pump source, a gain medium, and a resonator having a spectral filter; spectrally filtering, by the spectral filter, light in the resonator and attenuating, in particular blocking, by the spectral filter, one or more wavelength bands at least one of which being located completely within the gain bandwidth of the laser system such that two or more at least partially separated spectral regions are provided; mode-locking the two or more at least partially separated spectral regions.
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公开(公告)号：US10374383B2
公开(公告)日：2019-08-06
申请号：US15952762
申请日：2018-04-13
发明人： Takunori Taira , Hwan Hong Lim
IPC分类号： F02P23/04 , H01S3/11 , H01S3/06 , H01S3/10 , H01S3/102 , H01S3/16 , H01S3/094 , H01S3/0941 , H01S3/113 , H01S3/00
摘要： To provide a laser ignition device in which the ignition efficiency is improved and the laser pulse energy necessary for ignition is minimized by optimizing the pulse time width of laser. The laser ignition device includes: a pulse laser oscillator 1 configured to output a beam having a wavelength λ [μm] and a beam quality M2; an energy controller 2 configured to control energy of pulse laser outputted from the pulse laser oscillator 1; a lens 3 having a focal length f [mm] and configured to focus the pulse laser outputted from the pulse laser oscillator 1; and a pulse time width controller 14 configured to control a time width of the pulse laser, wherein the pulse time width controller 14 controls the time width of the pulse laser to be 0.6 to 2 ns.
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65.发明授权公开(公告)号：US10374382B2
公开(公告)日：2019-08-06
申请号：US16124434
申请日：2018-09-07
申请人： GIGAPHOTON INC.
发明人： Takashi Onose , Osamu Wakabayashi
IPC分类号： H01S3/10 , H01S3/23 , H01S3/16 , H01S3/067 , G02F1/35 , G02F1/355 , H01S3/109 , H01S3/115 , H01S3/11 , H01S3/108 , G02F1/37 , H01S3/131
摘要： A solid state laser device includes a seed laser that outputs continuous wave laser seed light, a light intensity changeable unit that changes a light intensity thereof and outputs seed pulse light, a CW excitation laser that outputs continuous wave excitation light, an amplifier that amplifies the seed pulse light and outputs amplified light based on an amplification gain increased by the excitation light, a wavelength conversion unit that converts a wavelength of the amplified light and outputs harmonic light, and a light intensity control unit that allows the light intensity changeable unit to output the seed pulse light after a certain time elapsed from an input of an external trigger signal each time the signal is input and output suppression light that suppresses an increase of the amplification gain in a period after an output of the seed pulse light until an input of a next external trigger signal.
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公开(公告)号：US10371906B1
公开(公告)日：2019-08-06
申请号：US15873143
申请日：2018-01-17
IPC分类号： G02B6/26 , G02B6/32 , G02B6/42 , G02B7/02 , H01S3/00 , H01S3/11 , H05H1/46 , G02B27/40 , H01S3/067
摘要： A technique for delivery of a divergent laser beam emitted with a free-space laser fiber facet, the beam having an optical power, into an optical waveguide. An optical axis of the laser beam is aligned approximately along a propagation Z direction into the optical waveguide. The fiber facet is located in a first plane perpendicular to the Z direction. The waveguide includes an input, direction, and X-Y position of the input in a second plane. The waveguide includes fluctuations in a X-Y-Z position of the input and fluctuations in direction. The laser beam is transformed into a collimated beam by re-directing a propagation of the laser beam, shifting the laser beam parallel to the Z direction, and focusing the laser beam into the input. The speed of transformation of the laser beam is greater than an instant speed of the fluctuations. A maximum optical power is delivered into the waveguide.
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公开(公告)号：US10367328B2
公开(公告)日：2019-07-30
申请号：US15643456
申请日：2017-07-06
发明人： Jin-Long Peng
摘要： A laser device with a ring laser resonator includes a polarization maintaining (PM) fiber, a first quarter waveplate, and an optical isolator. The PM fiber has a light input end and a light output end and is configured to guide a first linearly polarized light with a first phase along a fast axis of the PM fiber from the light input end and a second linearly polarized light with a second phase along a slow axis of the PM fiber from the input end. The first quarter waveplate is disposed at the light output end of the PM fiber and configured to convert the first and the second linearly polarized lights into left-handed and right-handed (or right-handed and left-handed) circularly polarized lights, respectively. The optical isolator is configured to unidirectionally transmit a laser pulse in the ring laser resonator.
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公开(公告)号：US10348049B2
公开(公告)日：2019-07-09
申请号：US15367942
申请日：2016-12-02
发明人： Hideo Iwase
摘要： Provided is a light source device including a fiber laser, an amplifier, and a nonlinear fiber. Group delay dispersions D1 and D2 are a positive value, the light velocity in a vacuum is denoted as c, a spectral full width at half maximum of the pulse light is denoted as Δλ, the center wavelength of the pulse light is denoted as λ, a coefficient based on a shape of the pulse light is denoted as a, a value of the spectral full width at half maximum Δλ at which a function T(Δλ): T ( Δλ ) = ( a × λ 2 c × Δλ ) 1 + [ ( D 1 + D 2 ) ( c × Δλ a × λ 2 ) 2 ] 2 is the minimum is denoted as Δλ_min, and Δλ at which a change amount of T(Δλ) when Δλ increases by 1 nm of λ becomes −3 dB is denoted as Δλ_3 dB, and Δλ satisfies Δλ_3 dB≤Δλ≤Δλ_min×2.
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公开(公告)号：US10333266B2
公开(公告)日：2019-06-25
申请号：US15031872
申请日：2014-10-27
申请人： ATLA LASERS AS
发明人： Irina T. Sorokina
摘要： The present disclosure provides an optical sub-system for a passive, mode-locked laser optical system. The optical sub-system may include a graphene-based saturable absorber and an optical device configured to control dispersion properties of the laser optical system. The graphene-based saturable absorber may be supported by the optical device.
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公开(公告)号：US20190187461A1
公开(公告)日：2019-06-20
申请号：US16219801
申请日：2018-12-13
申请人： Avava, Inc.
CPC分类号： G02B26/128 , G06K7/10613 , H01S3/11
摘要： An electromagnetic beam scanning system and corresponding method of use is provided. The system includes a motor, a reciprocating mechanism, and a focus optic. The motor is configured to generate a rotational movement. The reciprocating mechanism is operatively coupled with the motor and configured to convert the rotational movement to a reciprocating movement including a plurality of strokes along a first scanned axis. The reciprocating movement has a constant speed over a portion of at least one stroke of the plurality of strokes. The focus optic is operatively coupled to the reciprocating mechanism such that the focus optic moves experiences the reciprocating movement of the reciprocating mechanism. The focus optic is configured to focus an electromagnetic radiation (EMR) beam incident upon the focus optic to a focus along an optical axis substantially orthogonal to the first scanned axis.
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