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71. 发明申请

US20190123508A1 LIDAR SENSOR SYSTEM WITH SMALL FORM FACTOR 审中-公开
公开(公告)号：US20190123508A1
公开(公告)日：2019-04-25
申请号：US16167264
申请日：2018-10-22
申请人： SZ DJI TECHNOLOGY CO., LTD.
发明人： Xiaoping Hong , Huai Huang , Jiebin Xie
IPC分类号： H01S5/00 , G01S7/481 , H01S3/11 , G01S17/89 , G01S17/87 , G01S17/42 , G01S17/10 , H01S5/065 , H01S5/062 , H01S5/0683 , H01S5/40
摘要： A sensor system can comprise a light source generating a light pulse that is collimated, and a plurality of optical elements. Each of the plurality of optical elements is configured to rotate independently about an axis that is substantially common, and the plurality of optical elements operate to collectively direct the light pulse to one or more objects in an angle of view of the sensor system. Furthermore, the sensor system can comprise a detector configured to receive, via the plurality of optical elements, at least a portion of photon energy of the light pulse that is reflected back from the one or more objects in the angle of view of the sensor system, and convert the received photon energy into at least one electrical signal.

72. 发明申请

US20190103724A1 LASER SYSTEM 审中-公开
公开(公告)号：US20190103724A1
公开(公告)日：2019-04-04
申请号：US16208815
申请日：2018-12-04
申请人： GIGAPHOTON INC.
发明人： Takashi ONOSE , Osamu WAKABAYASHI
IPC分类号： H01S3/094 , H01S3/00 , H01S3/11
摘要： A laser system includes a laser device configured to output pulse laser light, and a first optical pulse stretcher including a delay optical path for stretching a pulse width of the pulse laser light. The first optical pulse stretcher is configured to change a beam waist position of circulation light that circulates through the delay optical path and is output therefrom, in an optical path axis direction according to a circulation count. When the circulation light is condensed by an ideal lens, a light condensing position of the circulation light is changed in the optical path axis direction according to the circulation count.

73. 发明授权

US10247606B2 Long wavelength infrared detection and imaging with long wavelength infrared source 有权
公开(公告)号：US10247606B2
公开(公告)日：2019-04-02
申请号：US14424933
申请日：2013-08-30
申请人： ITI Scotland—Scottish Enterprise
发明人： Graeme Malcolm , Gordon Robertson
IPC分类号： G01J3/10 , G01N21/3504 , H01S3/108 , G01N21/359 , G01J3/42 , G01N21/47 , G01N21/49 , H01S3/081 , H01S3/094 , H01S3/117 , H01S3/16 , H01S3/082 , H01S3/11 , G01V8/00
摘要： An infrared detection system comprises the following elements. A laser source provides radiation for illuminating a target (5). This radiation is tuned to at least one wavelength in the fingerprint region of the infrared spectrum. A detector (32) detects radiation backscattered from the target (5). An analyzer determines from at least the presence or absence of detected signal in said at least one wavelength whether a predetermined volatile compound is present. An associated detection method is also provided. In embodiments, the laser source is tunable over a plurality of wavelengths, and the detector comprises a hyperspectral imaging system. The laser source may be an optical parametric device has a laser gain medium for generating a pump beam in a pump laser cavity, a pump laser source and a nonlinear medium comprising a ZnGeP2 (ZGP) crystal. On stimulation by the pump beam, the ZnGeP2 (ZGP) crystal is adapted to generate a signal beam having a wavelength in a fingerprint region of the spectrum and an idler beam having a wavelength in the mid-infrared region of the spectrum. The laser gain medium and the ZnGeP2 (ZGP) crystal are located in the pump wave cavity.

74. 发明授权

US10216063B2 Single pass laser amplifier with pulsed pumping 有权
公开(公告)号：US10216063B2
公开(公告)日：2019-02-26
申请号：US15565626
申请日：2016-09-30
申请人： IPG PHOTONICS CORPORATION
发明人： Sergey Vasilyev , Igor Moskalev , Michael Mirov , Valentin Gapontsev
IPC分类号： G02F1/35 , G02F1/37 , G02F1/39 , H01S3/11 , H01S3/16 , H01S3/23 , G02F1/355 , H01S3/00 , H01S3/10 , H01S3/094 , H01S3/109
摘要： Systems and methods for spectrally broadening seed pulses with a single pass laser amplifier are disclosed. A bulk TM:II-VI polycrystalline material with combined gain and nonlinear characteristic provides passive (cold) spectral broadening of high power seed pulses. Continuous pumping provides more significant spectral broadening. In particular, pulsed pumping of TM:II-VI polycrystalline material (e.g. Cr2+:ZnS, Cr2+:ZnSe, and Cr2+:CdSe) is shown to provide significant spectral broadening to the super continuum generation SCG level. Pulse picking, pump sources, master oscillators and various optical components are described.

75. 发明申请

US20190033430A1 Variable Beam Spacing, Timing, and Power for Vehicle Sensors 审中-公开
公开(公告)号：US20190033430A1
公开(公告)日：2019-01-31
申请号：US16145909
申请日：2018-09-28
申请人： Waymo LLC
发明人： Benjamin Ingram , Pierre-Yves Droz , Luke Wachter , Scott McCloskey , Blaise Gassend , Gaetan Pennecot
IPC分类号： G01S7/481 , G01S7/484 , G01S17/10 , G01S17/93 , H01S3/11
摘要： The present disclosure relates to systems and methods that facilitate light detection and ranging operations. An example transmit block includes at least one substrate with a plurality of angled facets. The plurality of angled facets provides a corresponding plurality of elevation angles. A set of angle differences between adjacent elevation angles includes at least two different angle difference values. A plurality of light-emitter devices is configured to emit light into an environment along the plurality of elevation angles toward respective target locations so as to provide a desired resolution and/or a respective elevation angle. The present disclosure also relates to adjusting shot power and a shot schedule based on the desired resolution and/or a respective elevation angle.

76. 发明授权

US10191454B2 Methods and related systems of ultra-short pulse detection 有权
公开(公告)号：US10191454B2
公开(公告)日：2019-01-29
申请号：US15621137
申请日：2017-06-13
申请人： WILLIAM MARSH RICE UNIVERSITY
发明人： Aydin Babakhani , Babak Jamali
IPC分类号： G04F10/00 , G04F13/02 , H04B10/60 , H04L27/227 , H01S3/11 , H01S5/065
摘要： Ultra-short pulse detection. At least some example embodiments are methods including: receiving by an antenna a series of ultra-short pulses of electromagnetic energy at a repetition frequency, the receiving creates a pulse signal; self-mixing or intermodulating the pulse signal by applying the pulse signal to a non-linear electrical device, thereby creating a modulated signal; and filtering the modulated signal to recover a filtered signal having an intermodulated frequency being the repetition frequency.

77. 发明授权

US10177525B2 Passive mode-locked laser system and method for generation of long pulses 有权
公开(公告)号：US10177525B2
公开(公告)日：2019-01-08
申请号：US15551709
申请日：2016-03-15
申请人： INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUE
发明人： Yoann Jestin , Roberto Morandotti , Michael Kues , Benjamin Wetzel , Christian Reimer , Piotr Roztocki
IPC分类号： H01S3/11 , H01S3/067 , G02B6/293 , H01S3/108 , H01S5/14 , H01S3/00
摘要： A passive mode-locked laser method and system, the system comprising a nonlinear optical loop comprising a resonant nonlinear element, coupled to an amplification section by a beam splitter, the beam splitter splitting a light beam from the amplification section into light beams propagating in opposite directions around the nonlinear optical loop, the resonant nonlinear element acting as both a nonlinear element and a narrow bandwidth filter for the laser system, allowing mode-locking operation of the system on a single resonance of the resonant nonlinear element.

78. 发明授权

US10162246B2 Method for manufacturing mirrors with semiconductor saturable absorber 有权
公开(公告)号：US10162246B2
公开(公告)日：2018-12-25
申请号：US15112567
申请日：2015-01-19
申请人： Centre National de la Recherche Scientifique—CNRS
发明人： Jean-Louis Oudar , Sophie Bouchoule
IPC分类号： G02F1/355 , G02F1/35 , H01S3/11 , H01S3/04 , H01S3/113
摘要： The invention relates to a method for manufacturing mirrors with saturable semiconducting absorptive material, which includes: depositing a saturable semiconducting absorptive material (205) onto a growth substrate (200) in order to form a structure; depositing at least one metal layer onto the structure such as to form a first mirror (211); and depositing a heat-conductive substrate (212) onto the metal layer by electrodeposition through an electrically insulating mask (312), allowing the selective deposition of the thermally conductive substrate, in order to predefine the perimeter of the mirrors with saturable semiconducting absorptive material.

79. 发明授权

US10141713B2 Device and method for performing overall frequency stabilization of femtosecond laser optical comb by using optical modes directly extracted from optical comb 有权
公开(公告)号：US10141713B2
公开(公告)日：2018-11-27
申请号：US15744921
申请日：2015-08-19
申请人： Korea Advanced Institute of Science and Technology
发明人： Seung-Woo Kim , Young-Jin Kim , Byung Jae Chun , Heesuk Jang , Hyun Jay Kang
IPC分类号： H01S3/139 , H01S3/137 , H01S3/131 , H01S3/23 , H01S3/067 , H01S3/10 , H01S3/11 , H01S3/13
摘要： The present invention relates to a device and a method for performing overall frequency stabilization of a femtosecond laser optical comb by using optical modes directly extracted from the optical comb, and more particularly, to a device and a method for performing overall frequency stabilization of a femtosecond laser optical comb by using optical modes directly extracted from the optical comb capable of stabilizing an overall range of frequencies of the femtosecond laser optical comb by using optical modes directly extracted from the optical comb and generating a cw laser and pulse having an excellent frequency stability and linewidth from the stabilized optical comb.

80. 发明授权

US10135220B2 Synchronized tunable mode-locked lasers 有权
公开(公告)号：US10135220B2
公开(公告)日：2018-11-20
申请号：US15667440
申请日：2017-08-02
申请人： Halifax Biomedical Inc.
发明人： Bryan Burgoyne
IPC分类号： H01S3/11 , H01S3/23 , H01S3/109 , H01S3/08 , H01S3/106 , H01S3/067 , H01S3/10
摘要： A synchronized laser system for illuminating a sample with first and second laser light pulses, said system comprising: a trigger, said trigger being operative to issue first and second trigger signals, said first and second trigger signals being emitted at an adjustable frequency with a predetermined delay therebetween; a first tunable mode-locked laser operative for emitting said first laser light pulses in response to receiving a train of said first trigger signals, a first wavelength of said first laser light pulses being dependent on said adjustable frequency in accordance with a first wavelength-frequency relationship; a second tunable mode-locked laser operative for emitting said second laser light pulses in response to receiving a train of said second trigger signals, a second wavelength of said second laser light pulses being dependent on said adjustable frequency in accordance with a second wavelength-frequency relationship; wherein said predetermined delay is such that said first and second laser light pulses are emitted so as to arrive substantially simultaneously in said sample; and said first and second wavelength-frequency relationships are selected to result in a predetermined relationship between said first and second wavelengths at each frequency.

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