Curvilinear Laser Beam Dump Assembly for High-Power Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing laser beam dumps are limited by small absorbing surfaces, vulnerability to high laser fluence or peak power, and limited operating temperatures, which restrict their ability to handle high laser powers efficiently and safely.
Innovation Solution
A laser beam dump assembly featuring a beam dump housing with a curvilinear scattering surface and a detachable heat sink, designed to scatter or reflect a portion of the incident laser beam and absorb the remaining energy as thermal energy, which is then dissipated by the heat sink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior art beam dumps use small absorbing surfaces, then the device complexity is reduced, but the reliability deteriorates due to damage from high laser fluence or peak power
Solution Approach 1:
The beam dump is divided into multiple functional segments: a scattering surface that breaks up the incident laser beam into distributed pathways, and multiple absorbing surfaces positioned along these pathways. This segmentation allows the high laser power to be distributed across multiple smaller absorbing areas, preventing any single point from experiencing damaging fluence while maintaining overall system reliability.
Solution Approach 2:
The scattering surface introduces a new spatial dimension to the beam path by redirecting laser energy in multiple directions rather than along a single linear path. This dimensional transformation distributes the energy absorption across a three-dimensional volume rather than a two-dimensional surface, reducing the power density at any given location and improving resistance to high fluence damage.
2Temperature
If prior art beam dumps use forced convection cooling, then the heat dissipation is improved, but the device complexity increases due to cooling fans and water cooling systems
Solution Approach 1:
The beam dump housing incorporates passive heat dissipation features directly into its structure, including finned surfaces and thermally conductive pathways that automatically conduct and radiate heat to the surrounding environment. This self-service cooling system eliminates the need for external forced convection devices, reducing mechanical complexity while maintaining effective heat dissipation through the housing's own structural features.
Solution Approach 2:
The cooling function is merged with the structural housing itself rather than being a separate subsystem. The housing incorporates thermally conductive materials and geometric features (such as fins and heat sinks) that perform both structural support and heat dissipation functions simultaneously, eliminating the need for separate cooling fans or water cooling systems.
3Productivity
If prior art beam dumps are designed for maximum operating temperatures of about 500° C. and below, then the ease of manufacture is improved, but the productivity deteriorates due to limited laser power handling capability
Solution Approach 1:
The beam dump employs composite material construction combining materials with different thermal properties: scattering surfaces made from materials with appropriate optical properties for beam distribution, absorbing surfaces made from materials with high thermal capacity and conductivity, and housing materials providing both structural integrity and thermal management. This composite approach enables the system to handle higher laser powers by distributing and managing heat more effectively, while each individual material component remains manufacturable using conventional processes.
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 solution effectively handles high laser powers by distributing the energy across a larger surface area, enhancing heat dissipation and preventing damage from high fluence or peak power, while maintaining a compact and cost-effective form factor.
Implementation Method 1
The beam scattering member includes at least one curvilinear scattering surface configured to scatter or reflect at least a first portion of the incident laser beam
Implementation Method 2
The beam scattering member includes at least one curvilinear scattering surface configured to scatter or reflect at least a first portion of the incident laser beam
Implementation Method 3
allow a second portion of the incident laser beam to be absorbed by the scattering member as thermal energy
Implementation Method 4
the heat sink is configured to absorb at least a portion of the thermal energy from the beam scattering member
Implementation Method 5
at least one heat sink detachably coupled to the beam dump housing and in thermal communication with at least one beam scattering member
Data Source
AI summary
The present application discloses embodiments of a laser beam dump assembly. In one embodiment, the laser beam dump assembly includes a beam dump housing having a housing body with a passage formed therein, wherein the passage is sized to allow an incident laser beam to propagate therethrough into an interior volume formed in the housing body. The laser beam dump assembly further includes a beam scattering member having curvilinear scattering surface configured to scatter or reflect a first portion of the incident laser beam and allow a second portion of the incident laser beam to be absorbed by the scattering member as thermal energy. A heat sink is coupled to the beam dump housing in thermal communication with the beam scattering member, wherein the heat sink is configured to absorb and dissipate the thermal energy from the beam scattering member.