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Beam parameter product (BPP) control by varying fiber-to-fiber angle

A beam parameter product and optical fiber technology, applied in optics, light guides, lasers, etc., can solve the problem of lack of low-cost methods for laser systems

Active Publication Date: 2018-08-03
NLIGHT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although methods for maximizing laser beam quality have received much attention, there is still a lack of low-cost methods for fabricating laser systems with selectable beam qualities

Method used

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  • Beam parameter product (BPP) control by varying fiber-to-fiber angle
  • Beam parameter product (BPP) control by varying fiber-to-fiber angle
  • Beam parameter product (BPP) control by varying fiber-to-fiber angle

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Embodiment Construction

[0030] As used in this application and the claims, the words "a," "an" and "the" in the singular include plural referents unless the context clearly dictates otherwise. Furthermore, the term "comprising" means "comprising". Furthermore, the term "coupled" does not exclude the presence of intermediate elements between the coupled items.

[0031] The systems, devices and methods described herein should not be construed as limiting in any way. Rather, the present disclosure relates to all novel and non-obvious features and aspects of the various disclosed embodiments, individually and in various combinations and subcombinations with each other. The disclosed systems, methods and apparatus are not limited to any particular aspect or feature or combination thereof, nor do the disclosed systems, methods and apparatus claim that any one or more particular advantages exist or problems are solved. Any theory of operation is presented for convenience of explanation, but the disclosed ...

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Abstract

An apparatus includes a laser system that includes a first fiber having an output end and situated to propagate a first laser beam with a first beam parameter product (bpp) and a second fiber having an input end spliced to the output end of the first fiber at a fiber splice so as to receive the first laser beam and to form a second laser beam having a second bpp that is greater than the first bpp,wherein the output end of the first fiber and the input end of the second fiber are spliced at a tilt angle so as to increase the first bpp to the second bpp.

Description

[0001] Cross references to related patent applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 232,379, filed September 24, 2015, and is related to U.S. Provisional Patent Application No. 62 / 190,047, filed July 8, 2015. Both provisional patent applications are incorporated herein by reference in their entirety. technical field [0003] The present disclosure pertains to fiber optic laser systems and beam delivery systems. Background technique [0004] While meeting customer requirements and market demands, fiber laser systems are often characterized by a range of output characteristics that vary from system to system, including output power and beam quality. For example, in some laser applications, full diffraction-limited (or near-perfect) beam quality is necessary, while in others reduced beam quality is sufficient for processing (or may even be preferred). Additionally, individual steps in the laser processing supply ch...

Claims

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Application Information

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IPC IPC(8): G02B6/26H01S3/067
CPCG02B6/2555G02B6/2551G02B6/2553H01S3/06783G02B27/0994
Inventor D·洛根R·霍克D·R·巴尔斯利R·史蒂文斯
Owner NLIGHT INC