Abstract: The invention concerns a method for hyperpolarizing lithium atoms in a mixture by optically pumping, in a sampling cell, atoms of a first type or alkali metal and by spin exchange between the optically pumped electron of the alkali metal and the lithium atom electron. The lithium atoms are preferably oxidized into Li+ ions and accumulated. The nuclear spin polarization of the Li+ ions can be transmitted to a nuclear spin of an anion. The invention also concerns a method for producing substances with nuclear spin polarization in general. In accordance with said method, lithium atoms are optically pumped from atoms of a first type of alkali metal in a sampling cell and hyperpolarized by spin exchange between the optical pumped electron of the alkali metal and the lithium atom electron, the lithium atoms being then oxidized into Li+ ions. Then, the nuclear spin polarization of the Li+ ions is transmitted to another nucleus of an anion.

Abstract: The invention relates to a method and a device for removing the sheath or for stripping fibres of a fibre bundle. Each fibre comprises a core and a sheath, wherein the fibres are arranged adjacent to each other on a base such as to run in a first direction, a cut is made with two blades running perpendicular to the first direction in a plane from opposing sides such that the blades from a notch in each sheath running in the circumferential direction, the fibre bundle is then dipped in a chemical solvent up to the cuts in the fibres for a given period in order to pre-weaken the connection between the sheath and the core and d) the pre-weakened sheath sections are mechanically drawn from the fibre cores.

Abstract: The invention relates to a method and a device for removing the sheath or for stripping fibres of a fibre bundle. Each fibre comprises a core and a sheath, wherein the fibres are arranged adjacent to each other on a base such as to run in a first direction, a cut is made with two blades running perpendicular to the first direction in a plane from opposing sides such that the blades from a notch in each sheath running in the circumferential direction, the fibre bundle is then dipped in a chemical solvent up to the cuts in the fibres for a given period in order to pre-weaken the connection between the sheath and the core and the pre-weakened sheath sections are mechanically drawn from the fibre cores.

Abstract: The invention relates to a method for stripping fibers of a fiber bundle, wherein each fiber comprises a core and a cladding, wherein the fibers are disposed next to each other on an underlayment such that they extend along a first direction, a cutter extending transverse to the first direction cuts into the claddings and simultaneously all fibers are rolled about the longitudinal axis thereof on the underlayment, so that the cutter generates a cut running in the circumferential direction in each cladding, the fiber bundle is then immersed in a chemical solvent for a prescribed period of time, in order to pre-weaken the bond between the cladding and the core, and the pre-weakened cladding segments are mechanically pulled off of the fiber cores.

Abstract: The invention concerns a method for hyperpolarizing lithium atoms in a mixture by optically pumping, in a sampling cell, atoms of a first type or alkali metal and by spin exchange between the optically pumped electron of the alkali metal and the lithium atom electron. The lithium atoms are preferably oxidized into Li+ ions and accumulated. The nuclear spin polarization of the Li+ ions can be transmitted to a nuclear spin of an anion. The invention also concerns a method for producing substances with nuclear spin polarization in general. In accordance with said method, lithium atoms are optically pumped from atoms of a first type of alkali metal in a sampling cell and hyperpolarized by spin exchange between the optical pumped electron of the alkali metal and the lithium atom electron, the lithium atoms being then oxidized into Li+ ions. Then, the nuclear spin polarization of the Li+ ions is transmitted to another nucleus of an anion.

Abstract: A diode-pumped high performance solid state laser has at least one pump module comprising at least two laser diode arrays which transversely irradiate a solid state laser rod. The path length of the radiation emitted by a laser diode array through the solid state laser rod and the required absorption path for this radiation, determined by the emission wavelength of this radiation and the doping of the laser-active medium, are adapted to one another extensively in different ways.