Patents by Inventor Philip St J Russell
Philip St J Russell 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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Publication number: 20230268706Abstract: A broadband light source device for creating broadband light pulses includes a hollow-core fiber and a pump laser source device. The hollow-core fiber is configured to create the broadband light pulses by an optical non-linear broadening of pump laser pulses. The hollow-core fiber includes a filling gas, an axial hollow light guiding fiber core configured to support core modes of a guided light field, and an inner fiber structure surrounding the fiber core and configured to support transverse wall modes of the guided light field. The pump laser source device is configured to create and provide the pump laser pulses at an input side of the hollow-core fiber. The transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes.Type: ApplicationFiled: April 12, 2023Publication date: August 24, 2023Applicant: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Patrick Sebastian UEBEL, Philip St. J. RUSSELL, Sebastian Thomas BAUERSCHMIDT
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Patent number: 11688992Abstract: A broadband light source device for creating broadband light pulses includes a hollow-core fiber and a pump laser source device. The hollow-core fiber is configured to create the broadband light pulses by an optical non-linear broadening of pump laser pulses. The hollow-core fiber includes a filling gas, an axial hollow light guiding fiber core configured to support core modes of a guided light field, and an inner fiber structure surrounding the fiber core and configured to support transverse wall modes of the guided light field. The pump laser source device is configured to create and provide the pump laser pulses at an input side of the hollow-core fiber. The transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes.Type: GrantFiled: October 21, 2021Date of Patent: June 27, 2023Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Patrick Sebastian Uebel, Philip St. J. Russell, Sebastian Thomas Bauerschmidt
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Patent number: 11640028Abstract: A hollow-core photonic crystal fiber (HC-PCF) (10) for guiding at least one mode of a light field (1) along a mode guiding section (11) of the HC-PCF (10), comprises an outer jacket (12), an inner cladding (13) and a hollow core (14), which extend along the HC-PCF (10), wherein the inner cladding (13) is arranged on an interior surface of the outer jacket (12) and comprises anti-resonant structures (15) surrounding the hollow core (14), and the hollow core (14) has a mode guiding core diameter (d) provided along the mode guiding section of the HC-PCF (10), and wherein at least one fiber end (16) of the HC-PCF (10) has a light field coupling section (17) in which the hollow core (14) is tapered over an axial coupling section length from a fiber end core diameter (D) at the at least one fiber end (16) to the mode guiding core diameter (d). Furthermore, methods of using the HC-PCF and manufacturing the HC-PCF are described.Type: GrantFiled: May 26, 2021Date of Patent: May 2, 2023Assignee: MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V.Inventors: Sebastian Thomas Bauerschmidt, Patrick Sebastian Uebel, Philip St. J. Russell
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Publication number: 20220045470Abstract: A broadband light source device for creating broadband light pulses includes a hollow-core fiber and a pump laser source device. The hollow-core fiber is configured to create the broadband light pulses by an optical non-linear broadening of pump laser pulses. The hollow-core fiber includes a filling gas, an axial hollow light guiding fiber core configured to support core modes of a guided light field, and an inner fiber structure surrounding the fiber core and configured to support transverse wall modes of the guided light field. The pump laser source device is configured to create and provide the pump laser pulses at an input side of the hollow-core fiber. The transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes.Type: ApplicationFiled: October 21, 2021Publication date: February 10, 2022Applicant: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Patrick Sebastian Uebel, Philip St. J. Russell, Sebastian Thomas Bauerschmidt
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Patent number: 11205884Abstract: A broadband light source device for creating broadband light pulses includes a hollow-core fiber and a pump laser source device. The hollow-core fiber is configured to create the broadband light pulses by an optical non-linear broadening of pump laser pulses. The hollow-core fiber includes a filling gas, an axial hollow light guiding fiber core configured to support core modes of a guided light field, and an inner fiber structure surrounding the fiber core and configured to support transverse wall modes of the guided light field. The pump laser source device is configured to create and provide the pump laser pulses at an input side of the hollow-core fiber. The transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes.Type: GrantFiled: May 15, 2020Date of Patent: December 21, 2021Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V.Inventors: Patrick Sebastian Uebel, Philip St. J. Russell, Sebastian Thomas Bauerschmidt
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Publication number: 20210356656Abstract: A hollow-core photonic crystal fiber (HC-PCF) (10) for guiding at least one mode of a light field (1) along a mode guiding section (11) of the HC-PCF (10), comprises an outer jacket (12), an inner cladding (13) and a hollow core (14), which extend along the HC-PCF (10), wherein the inner cladding (13) is arranged on an interior surface of the outer jacket (12) and comprises anti-resonant structures (15) surrounding the hollow core (14), and the hollow core (14) has a mode guiding core diameter (d) provided along the mode guiding section of the HC-PCF (10), and wherein at least one fiber end (16) of the HC-PCF (10) has a light field coupling section (17) in which the hollow core (14) is tapered over an axial coupling section length from a fiber end core diameter (D) at the at least one fiber end (16) to the mode guiding core diameter (d). Furthermore, methods of using the HC-PCF and manufacturing the HC-PCF are described.Type: ApplicationFiled: May 26, 2021Publication date: November 18, 2021Applicant: Max-Planck-Gesellschaft Zur Forderung der Wissenschaften e. VInventors: Sebastian Thomas BAUERSCHMIDT, Patrick Sebastian UEBEL, Philip St.J. RUSSELL
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Patent number: 11029464Abstract: A hollow-core photonic crystal fiber (HC-PCF) (10) for guiding at least one mode of a light field (1) along a mode guiding section (11) of the HC-PCF (10), comprises an outer jacket (12), an inner cladding (13) and a hollow core (14), which extend along the HC-PCF (10), wherein the inner cladding (13) is arranged on an interior surface of the outer jacket (12) and comprises anti-resonant structures (15) surrounding the hollow core (14), and the hollow core (14) has a mode guiding core diameter (d) provided along the mode guiding section of the HC-PCF (10), and wherein at least one fiber end (16) of the HC-PCF (10) has a light field coupling section (17) in which the hollow core (14) is tapered over an axial coupling section length from a fiber end core diameter (D) at the at least one fiber end (16) to the mode guiding core diameter (d). Furthermore, methods of using the HC-PCF and manufacturing the HC-PCF are described.Type: GrantFiled: May 7, 2018Date of Patent: June 8, 2021Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Sebastian Thomas Bauerschmidt, Patrick Sebastian Uebel, Philip St. J. Russell
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Publication number: 20200280159Abstract: A broadband light source device for creating broadband light pulses includes a hollow-core fiber and a pump laser source device. The hollow-core fiber is configured to create the broadband light pulses by an optical non-linear broadening of pump laser pulses. The hollow-core fiber includes a filling gas, an axial hollow light guiding fiber core configured to support core modes of a guided light field, and an inner fiber structure surrounding the fiber core and configured to support transverse wall modes of the guided light field. The pump laser source device is configured to create and provide the pump laser pulses at an input side of the hollow-core fiber. The transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes.Type: ApplicationFiled: May 15, 2020Publication date: September 3, 2020Applicant: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Patrick Sebastian UEBEL, Philip St. J. RUSSELL, Sebastian Thomas BAUERSCHMIDT
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Patent number: 10693271Abstract: A broadband light source device (100) for creating broadband light pulses (1) comprises a hollow-core fiber (10) of non-bandgap type including a filling gas and being arranged for creating the broadband light pulses (1) by an optical nonlinear broadening of pump laser pulses (2), wherein the hollow-core fiber (10) has an axial hollow light guiding fiber core (11), which supports core modes of a guided light field, and an inner fiber structure (12), which surrounds the fiber core (11) and which supports transverse wall modes of the guided light field, and a pump laser source device (20) being arranged for creating and providing the pump laser pulses (2) at an input side (13) of the hollow-core fiber (10), wherein the transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes, the broadband light pulses (1) have a core mode spectrum being determined by a fiber length, a fiber core diameter, at least one pump pulse and/or beam parameter of the pump laser puType: GrantFiled: January 9, 2017Date of Patent: June 23, 2020Assignee: Max-Plank-Gesellschaft zur Förderung der Wissenschaften e.V.Inventors: Patrick Sebastian Uebel, Philip St. J. Russell, Sebastian Thomas Bauerschmidt
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Publication number: 20200166699Abstract: A hollow-core photonic crystal fiber (HC-PCF)(10) for guiding at least one mode of a light field(1) along a mode guiding section(11) of the HC-PCF(10), comprises an outer jacket(12), an inner cladding(13) and a hollow core(14), which extend along the HC-PCF(10), wherein the inner clad-ding(13) is arranged on an interior surface of the outer jacket(12) and comprises anti-resonant structures(15) surrounding the hollow core(14), and the hollow core(14) has a mode guiding core diameter(d) provided along the mode guiding section of the HC-PCF(10), and wherein at least one fiber end (16) of the HC-PCF(10) has a light field coupling section(17) in which the hollow core(14) is tapered over an axial coupling section length from a fiber end core diameter(D) at the at least one fiber end (16) to the mode guiding core diameter(d). Furthermore, methods of using the HC-PCF and manufacturing the HC-PCF are described.Type: ApplicationFiled: May 7, 2018Publication date: May 28, 2020Applicant: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.VInventors: Sebastian BAUERSCHMIDT, Patrick Sebastian UEBEL, Philip St. J. RUSSELL
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Publication number: 20190319420Abstract: A broadband light source device (100) for creating broadband light pulses (1) comprises a hollow-core fiber (10) of non-bandgap type including a filling gas and being arranged for creating the broadband light pulses (1) by an optical nonlinear broadening of pump laser pulses (2), wherein the hollow-core fiber (10) has an axial hollow light guiding fiber core (11), which supports core modes of a guided light field, and an inner fiber structure (12), which surrounds the fiber core (11) and which supports transverse wall modes of the guided light field, and a pump laser source device (20) being arranged for creating and providing the pump laser pulses (2) at an input side (13) of the hollow-core fiber (10), wherein the transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes, the broadband light pulses (1) have a core mode spectrum being determined by a fiber length, a fiber core diameter, at least one pump pulse and/or beam parameter of the pump laser puType: ApplicationFiled: January 9, 2017Publication date: October 17, 2019Applicant: Max-Planck-Gesellschaft zur Forderung der tA/issenschaften e.V.Inventors: Patrick Sebastian UEBEL, Philip St. J. RUSSELL, Sebastian Thomas BAUERSCHMIDT
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Patent number: 9362707Abstract: A fiber-based supercontinuum system including: a pump laser; a ZBLAN or other fluoride-based microstructured glass fiber; and control electronics; wherein the control electronics control the pump laser to generate laser pulses into the ZBLAN or other fluoride-based microstructured glass fiber. The fabrication of a ZBLAN photonic crystal fiber with sub-micron features and large air-filling fraction and the use of the fiber to generate a stable supercontinuum (200 to 2500 nm) from 140 fs, 1 nJ pulses at 1042 nm are disclosed.Type: GrantFiled: October 29, 2014Date of Patent: June 7, 2016Assignee: Max-Planek-Gesellschaft Zur Foderung der Wissenschaften EV.Inventors: Xin Jiang, Fehim Babic, Nicolas Y. Joly, Philip St. J. Russell
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Publication number: 20150117474Abstract: A fiber-based supercontinuum system including: a pump laser; a ZBLAN or other fluoride-based microstructured glass fiber; and control electronics; wherein the control electronics control the pump laser to generate laser pulses into the ZBLAN or other fluoride-based microstructured glass fiber. The fabrication of a ZBLAN photonic crystal fiber with sub-micron features and large air-filling fraction and the use of the fiber to generate a stable supercontinuum (200 to 2500 nm) from 140 fs, 1 nJ pulses at 1042 nm are disclosed.Type: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Inventors: Xin Jiang, Fehim Babic, Nicolas Y. Joly, Philip St. J. Russell
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Patent number: 6603912Abstract: A large core photonic crystal fiber for transmitting radiation having a core comprising a substantially transparent core material and having a core diameter of at least 5&mgr;. The fiber also comprises a cladding region surrounding the length of core material, wherein the cladding region comprises a first substantially transparent cladding material, having a first refractive index, and wherein the first substantially transparent cladding material has embedded along its length a substantially periodic array of holes, wherein the holes are filled with a second cladding material having a second refractive index less than the first refractive index, such that radiation input to the optical fiber is transmitted along the length of the core material in a single mode of propagation. In a preferred embodiment, the core diameter may be at least 20&mgr;, and may be as large as 50&mgr;. The fiber is capable of transmitting higher power radiation than conventional fibers, whilst maintaining propagation in a single mode.Type: GrantFiled: October 31, 2001Date of Patent: August 5, 2003Assignee: Qinetiq LimitedInventors: Timothy A Birks, Jonathan C Knight, Philip St J Russell
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Publication number: 20020122644Abstract: A large core photonic crystal fibre for transmitting radiation having a core comprising a substantially transparent core material and having a core diameter of at least 5&mgr;. The fibre also comprises a cladding region surrounding the length of core material, wherein the cladding region comprises a first substantially transparent cladding material, having a first refractive index, and wherein the first substantially transparent cladding material has embedded along its length a substantially periodic A array of holes, wherein the holes are filled with a second cladding material having a second refractive index less than the first refractive index, such that radiation input to the optical fibre is transmitted along the length of the core material in a single mode of propagation. In a preferred embodiment, the core diameter may be at least 20&mgr;, and may be as large as 50&mgr;.Type: ApplicationFiled: October 31, 2001Publication date: September 5, 2002Applicant: The Secretary of State for DefenceInventors: Timothy A. Birks, Jonathan C. Knight, Philip St. J. Russell
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Patent number: 6334019Abstract: A large core photonic crystal fiber for transmitting radiation having a core comprising a substantially transparent core material and having a core diameter of at least 5 &mgr;. The fiber also comprises a cladding region surrounding the length of core material, wherein the cladding region comprises a first substantially transparent cladding material, having a first refractive index, and wherein the first substantially transparent cladding material has embedded along its length a substantially periodic array of holes, wherein the holes are filled with a second cladding material having a second refractive index less than the first refractive index, such that radiation input to the optical fiber is transmitted along the length of the core material in a single mode of propagation. In a preferred embodiment, the core diameter may be at least 20 &mgr;, and may be as large as 50 &mgr;.Type: GrantFiled: December 17, 1999Date of Patent: December 25, 2001Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventors: Timothy A Birks, Jonathan C Knight, Philip St J Russell