Max-Planck-Gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Philip St J Russell

Patrick Sebastian Uebel

Sebastian Thomas Bauerschmidt

Fehim Babic

Nicolas Y Joly

Xin Jiang

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.

Broadband light source device and method of creating broadband light pulses

A hollow-core photonic crystal fiber (HC-PCF) () for guiding at least one mode of a light field () along a mode guiding section () of the HC-PCF (), comprises an outer jacket (), an inner cladding () and a hollow core (), which extend along the HC-PCF (), wherein the inner cladding () is arranged on an interior surface of the outer jacket () and comprises anti-resonant structures () surrounding the hollow core (), and the hollow core () has a mode guiding core diameter (d) provided along the mode guiding section of the HC-PCF (), and wherein at least one fiber end () of the HC-PCF () has a light field coupling section () in which the hollow core () is tapered over an axial coupling section length from a fiber end core diameter (D) at the at least one fiber end () to the mode guiding core diameter (d). Furthermore, methods of using the HC-PCF and manufacturing the HC-PCF are described.

Hollow-core photonic crystal fiber and method of manufacturing thereof

A broadband light source device () for creating broadband light pulses () comprises a hollow-core fiber () of non-bandgap type including a filling gas and being arranged for creating the broadband light pulses () by an optical nonlinear broadening of pump laser pulses (), wherein the hollow-core fiber () has an axial hollow light guiding fiber core (), which supports core modes of a guided light field, and an inner fiber structure (), which surrounds the fiber core () and which supports transverse wall modes of the guided light field, and a pump laser source device () being arranged for creating and providing the pump laser pulses () at an input side () of the hollow-core fiber (), wherein the transverse wall modes include a fundamental transverse wall mode and second and higher order transverse wall modes, the broadband light pulses () 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 pulses () and at least one gas parameter of the filling gas, and the inner fiber structure () of the hollow-core fiber () is configured such that at least the second and higher order transverse wall modes and the core mode spectrum have a spectral displacement relative to each other. Furthermore, a method of creating broadband light pulses is described.

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.

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Röttenbach, Germany

Philip St J Russell