Fiber Laser Connector Light Trap for Back-Reflected Heat
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Solution Overview
Problem
Fiber lasers face failure due to unconstrained heat generated by back-reflected light, which can cause erratic operation or damage to the optical system, particularly during high-power applications like cutting and welding.
Innovation Solution
A light trap mechanism within the fiber laser connector, featuring a housing with internal threads or grooves coated with reflective material, effectively traps and dissipates reflected light rays through multiple reflections, preventing heat buildup and potential damage to the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If back-reflected light is allowed to propagate freely in the fiber laser system, then the laser can operate at high power levels, but unconstrained heat builds up causing erratic operation or damage to the optical system
Solution Approach 1:
The patent extracts the harmful back-reflected light from the optical system by introducing a dedicated light trap component. The light trap is positioned to intercept back-reflected light before it can propagate back through the fiber and cause heat buildup, effectively removing the harmful element while allowing the laser to operate at high power levels
Solution Approach 2:
The light trap acts as an intermediary component between the workpiece and the fiber laser system. It intercepts and absorbs back-reflected light, preventing this harmful radiation from affecting the optical system. The light trap serves as a protective mediator that allows high-power operation without the detrimental effects of back-reflected light
2Temperature
If light trap is added to the fiber laser connector, then heat dissipation is improved and hot spots are prevented, but device complexity increases
Solution Approach 1:
The light trap is merged with the existing fiber laser connector structure rather than being a separate component. The light trap is integrated into the connector housing, combining the functions of light trapping and heat dissipation within the existing connector assembly, thereby minimizing the increase in device complexity while achieving improved temperature management
Solution Approach 2:
The light trap component performs multiple functions: it traps back-reflected light, dissipates heat, and prevents hot spot formation. By integrating these multiple functions into a single component that is part of the connector assembly, the patent avoids the need for separate components for each function, thereby limiting the increase in device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The light trap significantly reduces heat dissipation at specific reflection points, minimizing the risk of hot spots and preventing mechanical or thermal damage to the fiber laser system, thereby enhancing operational stability and extending its lifespan.
Implementation Method 1
A light trap mechanism within the fiber laser connector, featuring a housing with internal threads or grooves coated with reflective material, effectively traps and dissipates reflected light rays through multiple reflections
Data Source
AI summary
A fiber laser system includes a fiber laser connector having a housing to terminate a fiber that generates a laser beam. A chamber extends internally along a length of the housing. A light trap includes a plurality of threads formed along a wall of the chamber to trap light reflected back to the fiber laser connector in response to an application of the laser beam to a workpiece.