Optical Arrangements for Processing a Workpiece
First Claim
1. An optical arrangement for processing a workpiece, comprising:
- a fiber laser arrangement configured to emit laser radiation;
a fiber arrangement directly coupled to the fiber laser arrangement and configured to guide the laser radiation from the fiber laser arrangement to the workpiece to be processed, wherein the fiber arrangement comprises a transport fiber having a fiber core and one or more fiber claddings surrounding the fiber core; and
at least one coupling device configured to couple a portion of the laser radiation guided in the fiber arrangement into at least one fiber cladding of the transport fiber,wherein a spectral bandwidth of the coupling device has at least the same magnitude as a spectral bandwidth of the laser radiation emitted by the fiber laser arrangement, andwherein the fiber laser arrangement is configured to change a beam profile of the laser radiation guided in the direction of the workpiece to be processed by shifting the spectral bandwidth of the laser radiation relative to the spectral bandwidth of the coupling device.
1 Assignment
0 Petitions
Accused Products
Abstract
Optical arrangements for processing a workpiece include a fiber laser arrangement for emitting laser radiation, a fiber arrangement directly coupled to the fiber laser arrangement and configured to guide the laser radiation in a direction to the workpiece to be processed, the fiber arrangement including a transport fiber having a fiber core and at least one fiber cladding surrounding the fiber core, and at least one coupling device for coupling a portion of the laser radiation guided in the fiber arrangement into at least one fiber cladding of the transport fiber. The coupling device has a spectral bandwidth of at least the same magnitude as a spectral bandwidth of the laser radiation. The fiber laser arrangement is configured to change a beam profile of the guided laser radiation to shift the spectral bandwidth of the laser radiation relative to the spectral bandwidth of the coupling device.
10 Citations
20 Claims
-
1. An optical arrangement for processing a workpiece, comprising:
-
a fiber laser arrangement configured to emit laser radiation; a fiber arrangement directly coupled to the fiber laser arrangement and configured to guide the laser radiation from the fiber laser arrangement to the workpiece to be processed, wherein the fiber arrangement comprises a transport fiber having a fiber core and one or more fiber claddings surrounding the fiber core; and at least one coupling device configured to couple a portion of the laser radiation guided in the fiber arrangement into at least one fiber cladding of the transport fiber, wherein a spectral bandwidth of the coupling device has at least the same magnitude as a spectral bandwidth of the laser radiation emitted by the fiber laser arrangement, and wherein the fiber laser arrangement is configured to change a beam profile of the laser radiation guided in the direction of the workpiece to be processed by shifting the spectral bandwidth of the laser radiation relative to the spectral bandwidth of the coupling device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of processing a workpiece by an optical arrangement, the method comprising:
-
guiding a laser radiation generated from a laser arrangement in a direction to the workpiece to be processed by a fiber arrangement directly coupled to the laser arrangement, wherein the fiber arrangement comprises a transport fiber having a fiber core and one or more fiber claddings surrounding the fiber core; coupling, by at least one coupling device, a portion of the laser radiation guided in the fiber arrangement into at least one fiber cladding of the transport fiber; and changing a beam profile of the laser radiation guided in the direction of the workpiece to be processed by shifting a spectral bandwidth of the laser radiation relative to a spectral bandwidth of the coupling device, wherein the spectral bandwidth of the coupling device has at least the same magnitude as the spectral bandwidth of the laser radiation. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification