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

IPC: G02F1/35 ,  G01N21/00 ,  G01N21/25 ,  H01S3/09

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。

公开(公告)号：US20160156148A1

公开(公告)日：2016-06-02

申请号：US14903772

申请日：2014-07-07

Applicant: NKT PHOTONICS A/S

Inventor： Carsten L. THOMSEN ,  Thomas T. ALKESKJOLD ,  Erik B. THOMSEN

IPC: H01S3/067 ,  H01S3/16 ,  G02F1/365 ,  H01S3/094 ,  G02B6/02 ,  G02B6/036

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 microstructured optical fiber for generating supercontinuum light. The optical fiber comprises a core and a cladding region surrounding the core. The optical fiber comprises 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 comprises a core which is tapered from said first characteristic core diameter to said second characteristic core diameter over a tapered length. The invention also relates to a supercontinuum light source comprising an optical fiber according to the invention and a pump light source.

Abstract translation: 本发明涉及一种用于产生超连续光的微结构光纤。 光纤包括芯和围绕芯的包层区域。 光纤包括第一纤维长度部分，第二纤维长度部分以及所述第一和第二纤维长度部分之间的中间纤维长度部分。 第一纤维长度段具有第一特征芯直径大于约7μm的芯。 第二纤维长度部具有具有第二特征纤芯直径的芯，小于所述第一特征纤芯直径。 光纤的中间长度部分包括从所述第一特征芯直径到所述第二特征芯直径在锥形长度上逐渐变细的芯。 本发明还涉及一种超连续光源，其包括根据本发明的光纤和泵浦光源。

公开(公告)号：US20140091240A1

公开(公告)日：2014-04-03

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

IPC: G01N21/00

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。

公开(公告)号：US20250052946A1

公开(公告)日：2025-02-13

申请号：US18906325

申请日：2024-10-04

Applicant: NKT Photonics A/S

Inventor： Jens LYNGSØ ,  Cameron SMITH ,  Anders HARPØTH ,  Christian JAKOBSEN ,  Thomas Tanggard ALKESKJOLD ,  Irnis KUBAT

IPC: G02B6/02 ,  G02F1/35 ,  G02F1/365

Abstract: A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.

公开(公告)号：US12135453B2

公开(公告)日：2024-11-05

申请号：US18320911

申请日：2023-05-19

Applicant: NKT Photonics A/S

Inventor： Jens Lyngsø ,  Cameron Smith ,  Anders Harpøth ,  Christian Jakobsen ,  Thomas Tanggard Alkeskjold ,  Irnis Kubat

IPC: G02B6/02 ,  G02F1/365 ,  G02F1/35

Abstract: A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.

公开(公告)号：US20240118585A1

公开(公告)日：2024-04-11

申请号：US18310239

申请日：2023-05-01

Applicant: NKT PHOTONICS A/S

Inventor： Anatoly Borisovich Grudinin ,  John Redvers Clowes ,  Pascal Dupriez ,  Michael Yarrow

IPC: G02F1/35 ,  G01N21/64 ,  G01N21/65 ,  G02B21/00 ,  G02F1/39 ,  H01S3/00 ,  H01S3/30

CPC classification number: G02F1/3536 ,  G01N21/6458 ,  G01N21/65 ,  G02B21/0032 ,  G02B21/0076 ,  G02B21/0084 ,  G02F1/3532 ,  G02F1/395 ,  H01S3/0092 ,  H01S3/30 ,  G02F2202/32 ,  H01S3/005 ,  H01S3/067

Abstract: A coherent anti-stokes Raman scattering apparatus for imaging a sample includes an optical output; an optical source arranged to generate a first optical signal at a first wavelength; and a nonlinear element arranged to receive the first optical signal, where the nonlinear element is arranged to cause the first optical signal to undergo four-wave mixing on transmission through the nonlinear element such that a second optical signal at a second wavelength and a third optical signal at a third wavelength are generated, wherein an optical signal pair including two of the first, second and third optical signals is provided to the optical output for imaging the sample.

公开(公告)号：US20230350219A1

公开(公告)日：2023-11-02

申请号：US18339860

申请日：2023-06-22

Applicant: NKT PHOTONICS A/S

Inventor： Dmitri OULIANOV ,  Frederik NIELSEN ,  Irnis KUBAT ,  Thomas FEUCHTER ,  Timur ISKHAKOV

IPC: G02B27/28 ,  G02B27/09 ,  G02F1/1335 ,  G02F1/13357

CPC classification number: G02B27/286 ,  G02B27/0961 ,  G02B27/283 ,  G02F1/133526 ,  G02F1/13362

Abstract: A depolarizing homogenizer including one or more lenslet arrays, for providing a plurality of beamlets associated with different respective parts of a received beam. The depolarizing homogenizer includes a depolarizer comprising different areas which affect polarization differently, the depolarizer being positioned to cause alteration of the polarization characteristics of at least some of the plurality of beamlets. A lens is arranged to at least partially overlap the beamlets having the altered polarization characteristics.

公开(公告)号：US11675245B2

公开(公告)日：2023-06-13

申请号：US17191401

申请日：2021-03-03

Applicant: NKT PHOTONICS A/S

Inventor： Anatoly Borisovich Grudinin ,  John Redvers Clowes ,  Pascal Dupriez ,  Michael Yarrow

IPC: G02F1/35 ,  G01N21/64 ,  G02B21/00 ,  H01S3/30 ,  G02F1/39 ,  G01N21/65 ,  H01S3/00 ,  H01S3/067 ,  H01S3/16

CPC classification number: G02F1/3536 ,  G01N21/6458 ,  G01N21/65 ,  G02B21/0032 ,  G02B21/0076 ,  G02B21/0084 ,  G02F1/3532 ,  G02F1/395 ,  H01S3/0092 ,  H01S3/30 ,  G01N2021/653 ,  G02F1/3507 ,  G02F1/3528 ,  G02F1/392 ,  G02F2202/32 ,  H01S3/005 ,  H01S3/067 ,  H01S3/06741 ,  H01S3/1618

Abstract: A coherent anti-stokes Raman scattering apparatus for imaging a sample includes an optical output; an optical source arranged to generate a first optical signal at a first wavelength; and a nonlinear element arranged to receive the first optical signal, where the nonlinear element is arranged to cause the first optical signal to undergo four-wave mixing on transmission through the nonlinear element such that a second optical signal at a second wavelength and a third optical signal at a third wavelength are generated, wherein an optical signal pair including two of the first, second and third optical signals is provided to the optical output for imaging the sample.

公开(公告)号：US11474288B2

公开(公告)日：2022-10-18

申请号：US16610195

申请日：2018-05-02

Applicant: NKT Photonics A/S

Inventor： Thomas Feuchter

IPC: F21V8/00 ,  F21V9/40 ,  F21Y115/30 ,  F21Y115/10 ,  F21S41/24 ,  F21S43/251 ,  B60Q1/00

Abstract: A light system having a light supply arrangement, a Homogenizing Light Pipe (HLP) and a fiber bundle is disclosed. The light supply arrangement includes a light source and is arranged to supply light to an input end of the HLP. The HLP is configured for scrambling the received light and for delivering a beam of light to a common packed input end of the fiber bundle.

公开(公告)号：US20220269012A1

公开(公告)日：2022-08-25

申请号：US17744401

申请日：2022-05-13

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard ALKESKJOLD ,  Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Martin Dybendal MAACK ,  Mattia MICHIELETTO ,  Sidsel Rübner PAPIOR

IPC: G02B6/38 ,  G02B6/02

Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.