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公开(公告)号：US20240063597A1
公开(公告)日：2024-02-22
申请号：US18500035
申请日：2023-11-01
CPC分类号： H01S3/005 , G02B27/0944 , G02B27/1006 , H01S3/08009 , H01S3/2391
摘要： A spectral beam combining system includes a spectral channel splicer comprising a plurality of reflectors and a spectral beam combiner comprising a diffraction optical element such as a diffraction grating. The spectral beam combining system may further comprise at least one additional diffractive optical element or diffraction grating for dispersion compensation that reduces the effects of angular dispersion of wavelength components within the input channel. This spectral beam combining system facilitates combining an increased number of wider spectral channels thereby potentially allowing higher optical power, e.g., within each fewer channel lasers. The combined beam focal spot shape profile is maintained as spectrum width or central spectrum wavelength of any one or all input channels is changed.
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2.发明授权公开(公告)号：US11747639B2
公开(公告)日：2023-09-05
申请号：US16518500
申请日：2019-07-22
发明人： Eyal Feigenbaum , Jeffrey D. Bude , Jean-Michel Di Nicola , Hoang T. Nguyen , Christopher J. Stolz
CPC分类号： G02B27/283 , G02B5/3083 , G02B6/272
摘要： The present disclosure relates to a waveplate having a substrate forming an optic. The substrate may have an integral portion forming a plurality of angled columnar features on an exposed surface thereof. The plurality of angled columnar features may further be aligned parallel with a directional plane formed non-parallel to a reference plane, with the reference plane being normal to a surface of the substrate. The metasurface forms a birefringent metasurface.
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公开(公告)号：US20180013028A1
公开(公告)日：2018-01-11
申请号：US15204833
申请日：2016-07-07
发明人： Scott D. Nelson , George J. Caporaso , Steven A. Hawkins , Hoang T. Nguyen , Stephen Sampayan , Li-Fang Wang
IPC分类号： H01L31/09
CPC分类号： H01L31/09 , G02B6/4295 , H03K17/78
摘要： Methods, systems, and devices are disclosed for photoconductive switch package configurations. In some aspects, a photoconductive switch package includes of a wide bandgap photoconductive material (e.g., GaN, ZnO, diamond, AlN, SiC, BN, etc.), a source for energetic photons (e.g., a laser), a mechanism to couple the laser into the switch, and a mechanism for high voltage to enter and leave the switch package. In some implementations, the disclosed photoconductive switch packages can be configured as a three terminal device, e.g., similar to transistors, with one of the terminals being laser input or the voltage input to the laser system.
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4.发明授权公开(公告)号：US11693167B2
公开(公告)日：2023-07-04
申请号：US16616535
申请日：2018-05-24
发明人： Hoang T. Nguyen , Jerald A. Britten
CPC分类号： G02B5/3041 , H01S3/005 , H01S3/0057 , G02B5/1809
摘要： A system configuration that significantly improves the laser damage threshold of multi-layer dielectric gratings for lasers applications includes three main sections: 1) a laser module, 2) a TM polarization module, and 3) a multi-layer dielectric grating optimized for high efficiency operation with transverse magnetic polarized laser light.
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公开(公告)号：US20220260843A1
公开(公告)日：2022-08-18
申请号：US17650615
申请日：2022-02-10
发明人： Michael Rushford , Hoang T. Nguyen
摘要： A transmission grating optical beam combiner is provided. In some implementations, the beam combiner can include an optically transparent substrate and a transmission grating on the substrate. The transmission grating can be configured to combine and/or superimpose first and second input beams as a single output beam. The first input beam can be incident on the transmission grating at an angle corresponding to one diffraction order of the grating and the second input beam can be incident on the transmission grating at an angle corresponding to another diffraction order of the grating.
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公开(公告)号：US20210141135A1
公开(公告)日：2021-05-13
申请号：US16616535
申请日：2018-05-24
发明人： Hoang T. Nguyen , Jerald A. Britten
摘要： A system configuration that significantly improves the laser damage threshold of multi-layer dielectric gratings for lasers applications includes three main sections: 1) a laser module, 2) a TM polarization module, and 3) a multi-layer dielectric grating optimized for high efficiency operation with transverse magnetic polarized laser light.
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公开(公告)号：US10181544B2
公开(公告)日：2019-01-15
申请号：US15204833
申请日：2016-07-07
发明人： Scott D. Nelson , George J. Caporaso , Steven A. Hawkins , Hoang T. Nguyen , Stephen Sampayan , Li-Fang Wang
摘要： Methods, systems, and devices are disclosed for photoconductive switch package configurations. In some aspects, a photoconductive switch package includes of a wide bandgap photoconductive material (e.g., GaN, ZnO, diamond, AlN, SiC, BN, etc.), a source for energetic photons (e.g., a laser), a mechanism to couple the laser into the switch, and a mechanism for high voltage to enter and leave the switch package. In some implementations, the disclosed photoconductive switch packages can be configured as a three terminal device, e.g., similar to transistors, with one of the terminals being laser input or the voltage input to the laser system.
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公开(公告)号：US20180013029A1
公开(公告)日：2018-01-11
申请号：US15206133
申请日：2016-07-08
发明人： Lars Voss , Mihail Bora , George Caporaso , Adam Conway , Hoang T. Nguyen , Rebecca J. Nikolic , Stephen E. Sampayan , Sangtae Park
IPC分类号： H01L31/102 , H01L31/0232 , H01L31/02
CPC分类号： H01L31/02327 , G02B6/4295 , H01L31/0312 , H01L31/09
摘要： A photoconductive switch consisting of an optically actuated photoconductive material, e.g. a wide bandgap semiconductor such as SiC, situated between opposing electrodes. The electrodes are created using various methods in order to maximize reliability by reducing resistive heating, current concentrations and filamentation, and heating and ablation due to the light source. This is primarily accomplished by the configuration of the electrical contact geometry, choice of contacts metals, annealing, ion implantation, creation of recesses within the SiC, and the use of coatings to act as encapsulants and anti-reflective layers.
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公开(公告)号：US11835743B2
公开(公告)日：2023-12-05
申请号：US17172979
申请日：2021-02-10
发明人： Hoang T. Nguyen
IPC分类号： G02B5/18
CPC分类号： G02B5/1847 , G02B5/1833
摘要： Optical structures, including thin film designs and components with topography, are provided that achieve significantly improved laser damage thresholds and/or ultra-low-loss. These advances may be achieved by utilizing a bulk window including a material having a band gap that is at least 5.0 eV and a thickness. The bulk window can be configured to increase the laser induced damage threshold of the underlying optical structure.
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公开(公告)号：US11835387B2
公开(公告)日：2023-12-05
申请号：US17457417
申请日：2021-12-02
CPC分类号： G01J3/0208 , G01J3/021 , G01J3/10 , G01J3/18 , G01J2003/102 , G01J2003/1861
摘要： A spectral beam combining system includes a spectral channel splicer comprising a plurality of reflectors and a spectral beam combiner comprising a diffraction optical element such as a diffraction grating. This spectral beam combining system may facilitate combining an increased number of spectral channels thereby producing higher optical power of the combining beam system.
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