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公开(公告)号：US11221445B2
公开(公告)日：2022-01-11
申请号：US16797182
申请日：2020-02-21
Applicant: NKT PHOTONICS A/S
Inventor： Carsten L. Thomsen , Thomas T. Alkeskjold , Erik B. Thomsen
IPC: G02B6/02 , H01S3/094 , H01S3/0941 , H01S3/00 , G02F1/35 , H01S3/067 , G02B6/036 , G02F1/365 , G01B9/02 , H01S3/11 , H01S3/113 , H01S3/131 , H01S3/16
Abstract: The invention relates to a supercontinuum light source comprising a microstructured optical fiber and a pump light source. The microstructured optical fiber comprises a core and a cladding region surrounding the core, as well as a first fiber length section, a second fiber length section and an intermediate fiber length section between said first and second fiber length sections. The first fiber length section comprises a core with a first characteristic core diameter. The second fiber length section comprises a core with a second characteristic core diameter, smaller than said first characteristic core diameter, where said second characteristic core diameter is substantially constant along said second fiber length section. The intermediate length section of the optical fiber comprises a core which is tapered from said first characteristic core diameter to said second characteristic core diameter over a tapered length.
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公开(公告)号：US10441158B2
公开(公告)日：2019-10-15
申请号：US15980177
申请日：2018-05-15
Applicant: NKT PHOTONICS A/S
Inventor： Carsten L. Thomsen , Thomas Vestergaard Andersen , Thomas Feuchter
Abstract: A supercontinuum light source can include a seed laser arranged to provide seed pulses with a pulse frequency Fseed; a pulse frequency multiplier (PFM) arranged to multiply the seed pulses by converting pulses having the pulse frequency Fseed to pump pulses with a pulse frequency Fpump, where Fpump is larger than Fseed; and a non-linear element arranged to receive said pump pulses and convert said pump pulses to pulses of supercontinuum light. The PFM can further include a splitter for splitting pulses into first and second sub beams each having the same pulse frequency, where the PFM is configured such that the sub beams experience different delays; and a combiner for combining said first and second sub beams into a beam having the pulse frequency that is greater than said same pulse frequency. The splitter can have an uneven splitter ratio. The disclosure includes other embodiments as well.
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公开(公告)号：US09551647B2
公开(公告)日：2017-01-24
申请号：US13648697
申请日：2012-10-10
Applicant: NKT PHOTONICS A/S
Inventor： Carsten L. Thomsen , Frederik Donbaek Nielsen , Sascha Hauser , Eberhard Riedle , Maximilian Bradler
CPC classification number: G01N21/00 , G01N21/255 , G02F1/3501 , G02F2001/3528 , H01S3/09
Abstract: The disclosure relates to a tunable optical light source spanning the UV-range and possible also the visible and near-IR wavelengths. The tunable optical light source includes an input light source, a focusing element, a non-linear crystal arranged to convert the frequency of at least part of the output spectrum of the super continuum source, and a holding unit for the non-linear crystal. The input light source is a super continuum light source with a spectral bandwidth of at least about 300 nm and the holding unit is adjustable for changing the frequency converted output wavelength of the non-linear crystal wfc such that the lowest obtainable output wavelength wUV of said tunable light source is ultraviolet. The disclosure further relates to an illumination source and an optical measurement system.
Abstract translation: 本公开涉及跨越UV范围的可调谐光学光源以及可能的和近红外波长的可能的光学光源。 可调谐光源包括输入光源，聚焦元件，布置成转换超连续体源的输出光谱的至少一部分的频率的非线性晶体，以及用于非线性晶体的保持单元。 输入光源是具有至少约300nm的光谱带宽的超连续光源，并且保持单元可调节以改变非线性晶体wfc的频率转换输出波长，使得所述的非线性晶体wfc的最低可获得输出波长wUV 可调光源是紫外线。 本公开还涉及照明源和光学测量系统。
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公开(公告)号：USRE50238E1
公开(公告)日：2024-12-17
申请号：US17574175
申请日：2022-01-12
Applicant: NKT PHOTONICS A/S
Inventor： Carsten L. Thomsen , Thomas Vestergaard Andersen
Abstract: A supercontinuum light source includes a microstructured optical fiber, and a feeding unit arranged for feeding pump pulses to the microstructured optical fiber, wherein the feeding unit comprises a picosecond laser and one or more amplifiers, wherein the microstructured optical fiber is a silica fiber wherein at least a part of the core being of silica or doped silica, and including a core including core material and a cladding surrounding the core, and at least the core material is loaded with deuterium to have an OD absorption peak around 1870 nm, wherein the feeding unit is spliced to the microstructured optical fiber.
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公开(公告)号：US10928584B2
公开(公告)日：2021-02-23
申请号：US16786027
申请日：2020-02-10
Applicant: NKT PHOTONICS A/S
Inventor： Thomas Tanggaard Alkeskjold , Casper Laur Byg , Christian Jakobsen , Jens Kristian Lyngsøe , Kim G. Jespersen , Jeppe Johansen , Martin Dybendal Maack , Martin Erland Vestergaard Pedersen , Carsten L. Thomsen
IPC: G02B6/036 , C03B37/027 , G02B6/02 , C03C25/607 , C03C25/106 , C03C13/04 , C03B37/10 , C03C25/1065
Abstract: A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.
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Patent Agency Ranking
公开(公告)号：US10557987B2
公开(公告)日：2020-02-11
申请号：US16254884
申请日：2019-01-23
Applicant: NKT PHOTONICS A/S
Inventor： Thomas Tanggaard Alkeskjold , Casper Laur Byg , Christian Jakobsen , Jens Kristian Lyngsøe , Kim G. Jespersen , Jeppe Johansen , Martin Dybendal Maack , Martin Erland Vestergaard Pedersen , Carsten L. Thomsen
IPC: G02B6/036 , G02B6/02 , G02B6/14 , C03C25/106 , G02F1/365 , C03B37/027 , C03C25/607 , C03C25/1065 , G02F1/35 , C03B37/10 , C03C13/04
Abstract: A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.
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公开(公告)号：US09958606B2
公开(公告)日：2018-05-01
申请号：US15362531
申请日：2016-11-28
Applicant: NKT PHOTONICS A/S
Inventor： Carsten L. Thomsen , Thomas T. Alkeskjold , Erik B. Thomsen
IPC: G02B6/02 , H01S3/094 , H01S3/0941 , H01S3/00 , G02F1/35 , G02B6/036 , G02F1/365 , H01S3/067 , G01B9/02 , H01S3/11 , H01S3/113 , H01S3/131 , H01S3/16
CPC classification number: G02B6/02376 , G01B9/02007 , G01B9/02091 , G02B6/02214 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/03633 , G02F1/353 , G02F1/365 , G02F2001/3528 , G02F2202/32 , H01S3/0092 , H01S3/06725 , H01S3/06741 , H01S3/06745 , H01S3/094076 , H01S3/09415 , H01S3/11 , H01S3/113 , H01S3/1312 , H01S3/1611
Abstract: The invention relates to a supercontinuum light source comprising a microstructured optical fiber and a pump light source. The microstructured optical fiber comprises a core and a cladding region surrounding the core, as well as a first fiber length section, a second fiber length section and an intermediate fiber length section between said first and second fiber length sections. The first fiber length section comprises a core with a first characteristic core diameter. The second fiber length section comprises a core with a second characteristic core diameter, smaller than said first characteristic core diameter, where said second characteristic core diameter is substantially constant along said second fiber length section. The intermediate length section of the optical fiber comprises a core which is tapered from said first characteristic core diameter to said second characteristic core diameter over a tapered length.
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公开(公告)号：US20240230985A1
公开(公告)日：2024-07-11
申请号：US18613826
申请日：2024-03-22
Applicant: NKT Photonics A/S
Inventor： Carsten L. Thomsen , Thomas T. Alkeskjold , Erik B. Thomsen
IPC: G02B6/02 , G01B9/02001 , G01B9/02091 , G02B6/036 , G02F1/35 , G02F1/365 , H01S3/00 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/113 , H01S3/131 , H01S3/16
CPC classification number: G02B6/02376 , G01B9/02007 , G01B9/02091 , G02B6/02214 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/03633 , G02F1/353 , G02F1/365 , H01S3/0092 , H01S3/06725 , H01S3/06741 , H01S3/06745 , H01S3/094076 , H01S3/09415 , G02F1/3528 , G02F2202/32 , H01S3/113 , H01S3/1312 , H01S3/1611
Abstract: A microstructured optical fiber for generating supercontinuum light. The optical fiber includes a core and a cladding region surrounding the core. The optical fiber includes a first fiber length section, a second fiber length section as well as an intermediate fiber length section between said first and second fiber length sections. The first fiber length section has a core with a first characteristic core diameter larger than about 7 μm. The second fiber length section has a core with a second characteristic core diameter, smaller than said first characteristic core diameter. The intermediate length section of the optical fiber includes a core which is tapered from said first characteristic core diameter to the second characteristic core diameter over a tapered length. Also, a supercontinuum light source including an optical fiber and a pump light source.
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公开(公告)号：US11988940B2
公开(公告)日：2024-05-21
申请号：US17856048
申请日：2022-07-01
Applicant: NKT Photonics A/S
Inventor： Carsten L. Thomsen
CPC classification number: G02F1/365 , A61B1/06 , G02B6/0006 , G02B6/02319 , G02B6/02342 , H01S3/302 , G02B6/02333 , G02B6/4296 , G02B6/44382 , G02F1/3528
Abstract: A method of making a microstructured optical fiber including loading the core and cladding materials of the fiber with hydrogen and deuterium at a loading temperature; annealing the fiber at a selected temperature Tanneal; pumping the fiber with radiation; and reducing the temperature of the fiber and storing the fiber at the reduced temperature before the step of pumping the fiber; and wherein the method allows the hydrogen and the deuterium to become bound to the core material and the cladding material.
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公开(公告)号：US09841557B2
公开(公告)日：2017-12-12
申请号：US14903762
申请日：2014-07-07
Applicant: NKT PHOTONICS A/S
Inventor： Jeppe Johansen , Ole Bang , Casper Larsen , Thomas Feuchter , Carsten L. Thomsen , Thomas Vestergaard Andersen
CPC classification number: G02B6/02376 , G01B9/02091 , G02B6/02214 , G02B6/02333 , G02B6/02347 , G02B6/02361 , G02B6/255 , G02F1/353 , G02F1/365 , G02F2001/3528 , G02F2202/32 , H01S3/06725 , H01S3/06729 , H01S3/094042 , H01S3/094076 , H01S3/1106
Abstract: The invention relates to a microstructured optical fiber for generating incoherent supercontinuum light upon feeding of pump light. The microstructured optical fiber has a first section and a second section. A cross-section through the second section perpendicularly to a longitudinal axis of the fiber has a second relative size of microstructure elements and preferably a second pitch that is smaller than a blue edge pitch for the second relative size of microstructure elements. The invention also relates to an incoherent supercontinuum source comprising a microstructured optical fiber according to the invention.
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