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Laser Beam Product Parameter Adjustments

A beam parameter product, laser beam technology, applied in lasers, laser parts, optics, etc., can solve the problems of beam parameter product damage, loss of laser use qualifications, etc.

Pending Publication Date: 2020-10-30
II VI DELAWARE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the beam parameter product may be compromised (possibly increased) when the power is increased due to possible thermal lensing in the laser gain medium, whereas the beam parameter product may be conversely improved (possibly decreased) when the power is decreased
The effect is that reducing the power of the beam to a level suitable for another operation (e.g. welding or even cladding, brazing or hardening) may disqualify the laser from use based on the reduced beam parameter product

Method used

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  • Laser Beam Product Parameter Adjustments
  • Laser Beam Product Parameter Adjustments
  • Laser Beam Product Parameter Adjustments

Examples

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Embodiment Construction

[0021] The accompanying drawings, which constitute a part hereof, illustrate examples of the disclosure. It should be understood that the examples shown in the figures and / or discussed herein are non-exclusive and that there are other examples of how the present disclosure may be practiced.

[0022] Also, the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. Instead, phrases and terms used herein are to be given their broadest interpretations and meanings.

[0023] Industrial laser systems are used for a variety of tasks from cutting to welding to heat-related coating, including cladding and hardening. Some industrial laser systems use multimode fiber, while others use singlemode fiber. Different characteristics of laser beams make some beams suitable for one task and not another. For example, cutting tasks require lasers with low beam parameter products, while cladding and hardening tasks require lasers with ...

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Abstract

Systems, apparatuses, and methods are described for modifying a beam parameter product of a laser beam. The modified beam parameter product may increase the number of tasks that may be performed usinga given laser with its original beam parameter product. By increasing the beam parameter product of a laser, an initial low beam parameter product beam may be used to perform tasks requiring a higherbeam parameter product. The beam may be modified to redirect portions of the beam at different angles via one or more non-imaging refracting optical components or by one or more Fiber Bragg gratings.

Description

technical field [0001] Aspects of the present disclosure relate to adjusting the beam product parameters of a laser to expand the number of applications in which the laser can be used. Background technique [0002] High power lasers are prevalent in industrial manufacturing and processing operations. Types of lasers include gas-based (e.g., CO 2 ) lasers, neodymium (Nd) and neodymium yttrium aluminum garnet (Nd:YAG) lasers, laser microjet lasers and fiber lasers. Industrial lasers can be used for cutting, welding or coating heat treatment (including cladding and hardening). [0003] One controlling factor in determining the number of different uses for an industrial laser is the beam quality of the individual lasers. Beam quality can be defined as the beam parameter product for a given laser. The beam parameter product is the product of the divergence angle (half angle) of the laser beam and the radius of the beam at its narrowest point (beam waist). A beam with a low b...

Claims

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Application Information

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IPC IPC(8): H01S3/108H01S3/10H01S3/067
CPCH01S3/108H01S3/10H01S3/06708G02B6/02085G02B6/021G02B6/262G02B27/0994G02B6/0288G02B6/02076G02B27/30
Inventor 德特勒夫·沃尔夫安德烈亚·霍伊泽尔
Owner II VI DELAWARE INC
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