Laser Medium Through-Hole Flow Control
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Solution Overview
Problem
The quality of laser beams, particularly in terms of stability and focusing characteristics, is deteriorated due to the flow speed and direction of the cooling medium in existing laser beam amplification devices.
Innovation Solution
A plate-like laser medium with strategically designed through-holes of varying shapes and orientations is used to control the flow speed and direction of the cooling medium, preventing deterioration in laser beam quality by adjusting the flow path and flow speed through the medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling medium is flowed on the main surface of the laser medium to cool it, then the laser medium temperature is reduced, but the quality of the laser beam (stability and focusing characteristics) is deteriorated due to the flow speed of the cooling medium
Solution Approach 1:
The patent divides the cooling medium flow path into multiple segments by providing multiple through-holes (first, second, and third through-holes) at different positions and orientations within the laser medium. This segmentation allows the cooling medium to flow through distinct paths, reducing the negative impact on laser beam quality while maintaining effective cooling.
Solution Approach 2:
The patent applies local quality by designing through-holes with specific orientations and positions tailored to different regions of the laser medium. The first through-hole has a different orientation than the second and third through-holes, allowing optimized cooling in different local areas to minimize distortion of the laser beam while maintaining overall temperature control.
2Productivity
If the flow speed of the cooling medium is increased to improve cooling efficiency, then the cooling performance is enhanced, but the stability and focusing characteristics of the laser beam are further deteriorated
Solution Approach 1:
By segmenting the cooling flow into multiple through-holes, the patent allows for distributed cooling that reduces the need for high flow speeds in any single path, thereby maintaining cooling efficiency while reducing laser beam distortion.
Solution Approach 2:
The patent introduces spatial dimensionality by orienting through-holes in different directions (first through-hole with different orientation than second and third through-holes). This multi-dimensional cooling approach distributes the cooling effect across different spatial paths, reducing the impact of flow speed on laser beam quality while maintaining cooling efficiency.
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
This approach enables the amplification of laser beams with improved stability and focusing characteristics, maintaining high-quality laser output while effectively cooling the laser medium.
Implementation Method 1
The laser beam amplification device cools a laser medium by flowing a cooling medium to contact with a main surface of the laser medium in the laser medium unit
Implementation Method 2
By providing the through-hole in the plate-like laser medium, the flow speed of the cooling medium can be adjusted according to the size of the through-hole to be set
Data Source
AI summary
A plate-like laser medium has a through-hole for providing a flow of a cooling medium. The laser medium unit includes the plurality of laser media. A laser beam amplification device includes a laser medium unit 10, an excitation light source 21 that causes excitation light to enter the laser medium unit 10, a through-hole 16a of a window member as a unit for supplying the cooling medium in a through-hole 14a of the laser medium 14, and a cooling medium flow path F1 arranged around the laser medium unit 10.