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公开(公告)号：EP4001976A1
公开(公告)日：2022-05-25
申请号：EP20207371.4
申请日：2020-11-13
IPC分类号： G02B6/02 , C03B37/027
摘要： Disclosed is a method of processing an out-coupling end of a hollow core fiber comprising a plurality of anti-resonance elements (ARE) surrounding a hollow core, and a hollow core fiber having been so processed. The method comprises performing a tapering step to form a taper in the anti-resonance elements (ARE); performing a cleaving step at said taper to form at least one tapered out-coupling (OC) end of the hollow core fiber; and performing an end processing step comprising further heating the out-coupling (OC) end in a controlled manner to smoothen the out-coupling (OC) end.
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2.发明公开
公开(公告)号：EP3812836A1
公开(公告)日：2021-04-28
申请号：EP19204339.6
申请日：2019-10-21
IPC分类号： G02F1/365
摘要： A system and method for providing a light source is disclosed. In one arrangement, the light source comprises a gas cell having a window, an optical fiber that is hollow and has an axial direction, an end thereof being enclosed within the gas cell and optically coupled to the window via an optical path, and a surface, disposed around the end of the optical fiber, and extending past the end of the optical fiber in the axial direction towards the window so as to limit the exchange of gas between the optical path and the remainder of the gas cell.
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公开(公告)号：EP3786702A1
公开(公告)日：2021-03-03
申请号：EP19194974.2
申请日：2019-09-02
摘要： Disclosed is a mode control system and method for controlling an output mode of a broadband light source comprising a photonic crystal fiber (PCF). The mode control system comprises at least one detection unit configured to measure one or more parameters of radiation emitted from said broadband light source to generate measurement data; and a processing unit configured to evaluate mode purity of said radiation emitted from said broadband light source, from said measurement data. Based on the evaluation, the mode control system is configured to generate a control signal for optimization of one or more pump coupling conditions of said broadband light source. The pump coupling conditions relate to the coupling of a pump laser beam with respect to a fiber core of the photonic crystal fiber.
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公开(公告)号：EP3770677A1
公开(公告)日：2021-01-27
申请号：EP20185490.8
申请日：2020-07-13
摘要： A radiation source comprises: a hollow core optical fiber, a working medium; and a pulsed pump radiation source. The hollow core optical fiber comprises a body and has a hollow core. The working medium is disposed within the hollow core. The pulsed pump radiation source is arranged to produce pulsed pump radiation that is received by, and propagates through, the hollow core from an input end to an output end. Parameters of the pulsed pump radiation, the optical fiber and the working medium are configured to allow soliton self-compression of the pulsed pump radiation so as to change a spectrum of the pulsed pump radiation so as to form output radiation. In some embodiments, a length of the optical fiber is such that the output end substantially coincides with a position at which a temporal extent of the pulsed pump radiation is minimal.
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公开(公告)号：EP3715944A1
公开(公告)日：2020-09-30
申请号：EP19164997.9
申请日：2019-03-25
IPC分类号： G02F1/355
摘要： An apparatus (100) for receiving input radiation (108) and broadening a frequency range of the input radiation so as to provide broadband output radiation (110). The apparatus comprises a fiber (102), wherein the fiber (102) may comprise a hollow core (104) for guiding radiation propagating through the fiber (102). The apparatus (100) further comprises an apparatus for providing a gas mixture (106) within the hollow core (104). The gas mixture (106) comprises a hydrogen component, and a working component, wherein the working component is for broadening a frequency range of a received input radiation (108) so as to provide the broadband output radiation (110). The apparatus may be included in a radiation source.
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6.发明公开
公开(公告)号：EP4365653A3
公开(公告)日：2024-07-24
申请号：EP24166014.1
申请日：2020-10-19
发明人： BALTIS, Coen Hubertus Matheus , Uebel, Patrick Sebastian , GÖTZ, Peter Maximilian , RAVENSBERGEN, Janneke , BAUERSCHMIDT, Sebastian Thomas
CPC分类号： G02B6/02328
摘要： Disclosed are optical components and methods of manufacture thereof. A first optical component comprises a hollow-core photonic crystal fiber comprising internal capillaries for guiding radiation and an outer capillary sheathing the internal capillaries; and at least an output end section having a larger inner diameter over at least a portion of said output end section than an inner diameter of the outer capillary along a central portion of the hollow-core photonic crystal fiber prior to the output end section. A second optical component comprises a hollow-core photonic crystal fiber and a sleeve arrangement.
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7.发明公开
公开(公告)号：EP4365653A2
公开(公告)日：2024-05-08
申请号：EP24166014.1
申请日：2020-10-19
发明人： BALTIS, Coen Hubertus Matheus , Uebel, Patrick Sebastian , GÖTZ, Peter Maximilian , RAVENSBERGEN, Janneke , BAUERSCHMIDT, Sebastian Thomas
IPC分类号： G02B6/38
CPC分类号： G02B6/02328
摘要： Disclosed are optical components and methods of manufacture thereof. A first optical component comprises a hollow-core photonic crystal fiber comprising internal capillaries for guiding radiation and an outer capillary sheathing the internal capillaries; and at least an output end section having a larger inner diameter over at least a portion of said output end section than an inner diameter of the outer capillary along a central portion of the hollow-core photonic crystal fiber prior to the output end section. A second optical component comprises a hollow-core photonic crystal fiber and a sleeve arrangement.
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公开(公告)号：EP4030230A1
公开(公告)日：2022-07-20
申请号：EP21152056.4
申请日：2021-01-18
发明人： UEBEL, Patrick Sebastian , PONGERS, Willem Richard , BAUERSCHMIDT, Sebastian Thomas , GÖTZ, Peter Maximilian , VAN DEN OETELAAR, Ludovicus
摘要： Methods and apparatus for generating broadband radiation. The apparatus comprises a pump source configured to generate pump radiation comprising a plurality of radiation pulses having a pulse energy of 2.5 µJ or less; The apparatus comprises a hollow core fiber comprising a hollow core and a cladding surrounding the hollow core, the hollow core having a pressurized gas therein, and the hollow core fiber being arranged to receive, at an input end, the pump radiation. One or more of a diameter of the hollow core and a pressure of the gas is configured such that the radiation pulse has a soliton order that is higher than 16 so as to broaden a spectrum of the pump radiation using modulation instability as the pump radiation propagates along the hollow-core fiber, for providing output broadband radiation from an output end of the hollow core fiber.
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公开(公告)号：EP3913429A1
公开(公告)日：2021-11-24
申请号：EP20175307.6
申请日：2020-05-19
摘要： Disclosed is a supercontinuum radiation source comprising a modulator being operable to modulate pump laser radiation comprising a train of radiation pulses to provide modulated pump laser radiation, said modulation being such to selectively provide a burst of said pulses; and a hollow-core photonic crystal fiber being operable to receive the modulated pump laser radiation and excite a working medium contained within the hollow-core photonic crystal fiber so as to generate supercontinuum radiation.
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10.发明公开
公开(公告)号：EP3705942A1
公开(公告)日：2020-09-09
申请号：EP19160457.8
申请日：2019-03-04
IPC分类号： G03F1/00
摘要： Disclosed is an optical component, being configured to function as an optical frequency converter in a broadband radiation source device. The optical component comprises a gas cell, and a hollow-core photonic crystal fiber at least partially enclosed within said gas cell. The local cavity volume of said gas cell, where said hollow-core photonic crystal fiber is enclosed within the gas cell, comprises a maximum value of 36cm 3 per cm of length of said hollow-core photonic crystal fiber.
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