Abstract: A laser fiber has a distal end having a laser fiber face. A tip addition is attached to or formed onto the fiber face. The material of the tip addition one of fragments or melts when laser energy from a suitable laser device is passed through the laser fiber and through the tip addition.

Abstract: A laser fiber has a distal end having a laser fiber face. A tip addition is attached to or formed onto the fiber face. The material of the tip addition one of fragments or melts when laser energy from a suitable laser device is passed through the laser fiber and through the tip addition.

Abstract: A method for generating a diameter-enlarged end on an optical fiber, includes placing a longitudinal subsection of a longitudinal section of the fiber into a heating zone and heating the longitudinal subsection, wherein first and second sides of the longitudinal section on either side of the longitudinal subsection are situated outside the heating zone; compressing the heated longitudinal subsection in a longitudinal direction of the optical fiber; pushing the first side of the longitudinal section toward the heating zone in the longitudinal direction and pulling the second side of the longitudinal section away from the heating zone in the longitudinal direction, wherein the first side of the longitudinal section is pushed to a greater degree than the second side of the longitudinal section is pulled, and generating an optical entry surface of the fiber by cutting the enlarged longitudinal subsection transversely to the longitudinal direction of the fiber.

Abstract: In a method for manufacturing a preform for drawing a microstructured optical fiber, a core element and multiple sub-elements are arranged extending along the perform. The sub-elements and the core element form a bundle, which is twisted by a specified angle about the longitudinal axis of the bundle, wherein the pattern formed by the cross section of the sub-elements and the cross section of the core element is preserved along a length of the perform. The sub-elements and the core elements are subsequently at least partially fused together by heating the material of which the core element and the sub elements are made of above the transformation point of the material, so as to at least partially eliminate the cavities between the sub-elements, between the sub-elements and the core element, and between the sub-elements and the casing.

Abstract: A laser fiber has a distal end having a laser fiber face. A tip addition is attached to or formed onto the fiber face. The material of the tip addition one of fragments or melts when laser energy from a suitable laser device is passed through the laser fiber and through the tip addition.

Abstract: An apparatus for medical treatment by means of laser light includes an optical conducting fiber which has a curved light emission end and includes a core, a cladding arranged above the core for conducting laser light coupled into the optical conducting fiber, and capillaries arranged in the cladding, wherein the capillaries run in a longitudinal direction of the optical conducting fiber at a radial distance from a longitudinal axis of the optical conducting fiber and form a capillary ring when viewed in cross-section, wherein the capillaries have cavities which are separated by bridges which have a width which is smaller than a wavelength of the laser light, wherein the laser light emerges from a forward surface of the light emission end and is transmitted in a direction which runs transverse to a substantially straight longitudinal section located directly in front of a curvature which defines the curved light emission end.

Abstract: An apparatus for medical treatment by means of laser light includes an optical conducting fiber which has a curved light emission end and includes a core, a cladding arranged above the core for conducting laser light coupled into the optical conducting fiber, and capillaries arranged in the cladding, wherein the capillaries run in a longitudinal direction of the optical conducting fiber at a radial distance from a longitudinal axis of the optical conducting fiber and form a capillary ring when viewed in cross-section, wherein the capillaries have cavities which are separated by bridges which have a width which is smaller than a wavelength of the laser light, wherein the laser light emerges from a forward surface of the light emission end and is transmitted in a direction which runs transverse to a substantially straight longitudinal section located directly in front of a curvature which defines the curved light emission end.

Abstract: In a method for manufacturing a preform for drawing a microstructured optical fiber, a core element and multiple sub-elements are arranged extending along the perform. The sub-elements and the core element form a bundle, which is twisted by a specified angle about the longitudinal axis of the bundle, wherein the pattern formed by the cross section of the sub-elements and the cross section of the core element is preserved along a length of the perform. The sub-elements and the core elements are subsequently at least partially fused together by heating the material of which the core element and the sub elements are made of above the transformation point of the material, so as to at least partially eliminate the cavities between the sub-elements, between the sub-elements and the core element, and between the sub-elements and the casing.

Abstract: The invention relates to an apparatus for coupling light into an optical wave guide, a laser system with such an apparatus, and a preform to manufacture the apparatus for coupling light into an optical wave guide with the aid of a pumping fiber to guide the light, whereby the optical wave guide comprises a core with a cladding and an initial length segment with a second length segment immediately connected to it, whose cross section increases in tapered form with respect to the first length segment.

Abstract: The invention relates to an apparatus for coupling light into an optical wave guide, a laser system with such an apparatus, and a preform to manufacture the apparatus for coupling light into an optical wave guide with the aid of a pumping fiber to guide the light, whereby the optical wave guide comprises a core with a cladding and an initial length segment with a second length segment immediately connected to it, whose cross section increases in tapered form with respect to the first length segment.