Patents by Inventor Carsten L. Thomsen
Carsten L. Thomsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9841557Abstract: 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.Type: GrantFiled: July 7, 2014Date of Patent: December 12, 2017Assignee: NKT PHOTONICS A/SInventors: Jeppe Johansen, Ole Bang, Casper Larsen, Thomas Feuchter, Carsten L. Thomsen, Thomas Vestergaard Andersen
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Publication number: 20170351023Abstract: The invention concerns 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 comprises a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region comprises 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 comprises hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further comprises 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.<Th<250° C.Type: ApplicationFiled: December 15, 2015Publication date: December 7, 2017Applicant: NKT PHOTONICS A/SInventors: 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
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Patent number: 9835795Abstract: 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 ?m. 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.Type: GrantFiled: July 7, 2014Date of Patent: December 5, 2017Assignee: NKT PHOTONICS A/SInventors: Carsten L. Thomsen, Thomas T. Alkeskjold, Erik B. Thomsen
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Patent number: 9766530Abstract: 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.Type: GrantFiled: December 2, 2015Date of Patent: September 19, 2017Assignee: NKT PHOTONICS A/SInventors: Carsten L. Thomsen, Thomas Vestergaard Andersen
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Patent number: 9746749Abstract: An optical fiber includes a core and a cladding. The optical fiber includes a core material and a cladding material, respectively, wherein the fiber is a non-linear microstructured optical fiber, the microstructured optical fiber being obtainable by a method including loading with hydrogen and/or deuterium and optionally annealing and/or irradiation whereby the lifetime of the fiber may be extended in high power applications.Type: GrantFiled: July 3, 2009Date of Patent: August 29, 2017Assignee: NKT Photonics A/SInventors: Carsten L. Thomsen, Thomas Vestergaard Andersen
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Publication number: 20170150880Abstract: A supercontinuum light source can comprise 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 comprise 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.Type: ApplicationFiled: October 2, 2016Publication date: June 1, 2017Inventors: Carsten L. Thomsen, Thomas Vestergaard Andersen, Thomas Feuchter
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Publication number: 20170085051Abstract: 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.Type: ApplicationFiled: November 28, 2016Publication date: March 23, 2017Applicant: NKT PHOTONICS A/SInventors: Carsten L. THOMSEN, Thomas T. ALKESKJOLD, Erik B. THOMSEN
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Patent number: 9551647Abstract: 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.Type: GrantFiled: October 10, 2012Date of Patent: January 24, 2017Assignee: NKT PHOTONICSInventors: Carsten L. Thomsen, Frederik Donbaek Nielsen, Sascha Hauser, Eberhard Riedle, Maximilian Bradler
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Patent number: 9504374Abstract: A supercontinuum light source comprising an intermediate supercontinuum light source and a single mode coupling unit, an optical measurement system comprising such light source, as well as a method of measuring are described. The supercontinuum light source comprises a pulse frequency multiplier to increase the repetition rate and the single mode coupling unit is arranged to dampen and shape the spectrum from the intermediate supercontinuum light source to allow measurements with a reduced noise floor.Type: GrantFiled: May 30, 2013Date of Patent: November 29, 2016Assignee: NKT PHOTONICS A/SInventors: Carsten L. Thomsen, Thomas Vestergaard Andersen, Thomas Feuchter
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Publication number: 20160170136Abstract: 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.Type: ApplicationFiled: July 7, 2014Publication date: June 16, 2016Applicant: NKT PHOTONICS A/SInventors: Jeppe JOHANSEN, Ole BANG, Casper LARSEN, Thomas FEUCHTER, Carsten L. THOMSEN, Thomas Vestergaard ANDERSEN
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Publication number: 20160156148Abstract: 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 ?m. 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.Type: ApplicationFiled: July 7, 2014Publication date: June 2, 2016Applicant: NKT PHOTONICS A/SInventors: Carsten L. THOMSEN, Thomas T. ALKESKJOLD, Erik B. THOMSEN
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Publication number: 20160085137Abstract: 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.Type: ApplicationFiled: December 2, 2015Publication date: March 24, 2016Applicant: NKT PHOTONICS A/SInventors: Carsten L. THOMSEN, Thomas Vestergaard ANDERSEN
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Publication number: 20150138507Abstract: A supercontinuum light source comprising an intermediate supercontinuum light source and a single mode coupling unit, an optical measurement system comprising such light source, as well as a method of measuring are described. The supercontinuum light source comprises a pulse frequency multiplier to increase the repetition rate and the single mode coupling unit is arranged to dampen and shape the spectrum from the intermediate supercontinuum light source to allow measurements with a reduced noise floor.Type: ApplicationFiled: May 30, 2013Publication date: May 21, 2015Inventors: Carsten L. Thomsen, Thomas Vestergaard Andersen, Thomas Feuchter
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Patent number: 8977087Abstract: The invention relates to a tapered optical fiber and a method and drawing tower for producing such an optical fiber. The tapered optical fiber comprising a core region that is capable of guiding light along a longitudinal axis of said optical fiber and a cladding region surrounding said core region. The optical fiber comprises a tapered section arranged between a first longitudinal position and a second longitudinal position, said tapered section comprising a first taper section having a first length, L1, over which the optical fiber is tapered down to a taper waist, and a second taper section having a second length, L2, over which said optical fiber is tapered up.Type: GrantFiled: August 30, 2011Date of Patent: March 10, 2015Assignee: NKT Photonics A/SInventors: Christian Jacobsen, Ole Bang, Simon Toft Sørensen, Peter Morten Moselund, Carsten L. Thomsen
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Patent number: 8913317Abstract: The invention relates to a method and a device for illuminating or irradiating an object, a sample (8), or the like, for the purpose of imaging or analysis, particularly for use in a laser microscope (1), preferably in a confocal microscope having a laser light source (2) emitting the illuminating light, the laser light being coupled directly or by means of a glass fiber into an illumination light path (4), characterized in that the laser light source (2) is switched on rapidly upon a trigger signal directly prior to the actual need, for example, directly prior to imaging.Type: GrantFiled: August 11, 2008Date of Patent: December 16, 2014Assignee: Leica Microsystems CMS GmbHInventors: Volker Seyfried, Hilmar Gugel, Carsten L. Thomsen
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Publication number: 20140091240Abstract: 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.Type: ApplicationFiled: October 10, 2012Publication date: April 3, 2014Applicant: NKT PHOTONICS A/SInventors: Carsten L. THOMSEN, Frederik Donbaek NIELSEN, Sascha HAUSER, Eberhard RIEDLE, Maximilian BRADLER
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Publication number: 20130329270Abstract: A fluorescence measurement system comprising a broadband light source and acousto-optical turnable filter (AOTF) controlled by a control unit using an acoustic RF signal provided by a Voltage Controlled Oscillator (VCO).Type: ApplicationFiled: December 12, 2011Publication date: December 12, 2013Applicant: NKT PHOTONICS A/SInventors: Frederik D. Nielsen, Carsten L. Thomsen, Weidong Sheng, Erik B. Thomsen
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Publication number: 20130182999Abstract: The invention relates to a tapered optical fiber and a method and drawing tower for producing such an optical fiber. The tapered optical fiber comprising a core region that is capable of guiding light along a longitudinal axis of said optical fiber and a cladding region surrounding said core region. The optical fiber comprises a tapered section arranged between a first longitudinal position and a second longitudinal position, said tapered section comprising a first taper section having a first length, L1, over which the optical fiber is tapered down to a taper waist, and a second taper section having a second length, L2, over which said optical fiber is tapered up.Type: ApplicationFiled: August 30, 2011Publication date: July 18, 2013Applicant: NKT Photonics A/SInventors: Christian Jacobsen, Ole Bang, Simon Toft Sørensen, Peter Morten Moselund, Carsten l. Thomsen
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Patent number: 8145023Abstract: The disclosure relates to an optical fiber including a core and a cladding having a core material and a cladding material, respectively, wherein the fiber is a non-linear microstructured optical fiber, the microstructured optical fiber being obtainable by a method including loading the core material and optionally the cladding material with hydrogen and/or deuterium whereby the lifetime of the fiber may be extended in high pulse applications.Type: GrantFiled: January 14, 2008Date of Patent: March 27, 2012Assignee: NKT Photonics A/SInventor: Carsten L. Thomsen
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Publication number: 20110279890Abstract: The invention relates to a method and a device for illuminating or irradiating an object, a sample (8), or the like, for the purpose of imaging or analysis, particularly for use in a laser microscope (1), preferably in a confocal microscope having a laser light source (2) emitting the illuminating light, the laser light being coupled directly or by means of a glass fiber into an illumination light path (4), characterized in that the laser light source (2) is switched on rapidly upon a trigger signal directly prior to the actual need, for example, directly prior to imaging.Type: ApplicationFiled: August 11, 2008Publication date: November 17, 2011Inventors: Volker Seyfried, Hilmar Gugel, Carsten L. Thomsen