Diffusion Cooled Gas Laser Electrode Dielectric Thickness
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Solution Overview
Problem
Existing gas laser systems, particularly CO2 lasers, face challenges in achieving uniform gas discharge due to voltage changes along the length of the laser, which can be mitigated by additional inductances but increase production complexity and cost.
Innovation Solution
The implementation of a diffusion-cooled gas laser system with a dielectric element on the electrodes, where the dielectric thickness ratio (d/∈res) varies along the length, allowing for controlled discharge distribution and temperature management without additional inductances, using materials like water, ceramic, PTFE, or air to influence the dielectric constant and electric field strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional inductances are added to minimize voltage changes and promote uniform gas discharging, then discharge uniformity is improved, but device complexity and production costs increase
Solution Approach 1:
The patent removes the additional inductances from the system by incorporating the necessary inductive function directly into the electrode structure itself. The electrode design includes integrated inductive elements that provide the required voltage compensation without requiring separate inductance components, thereby simplifying the overall device while maintaining discharge uniformity
Solution Approach 2:
The patent combines the inductive function with the electrode structure into a single integrated component. By merging the inductance function with the electrode, the system eliminates separate inductance elements and reduces the total number of components, thereby reducing device complexity while maintaining the ability to minimize voltage changes and ensure uniform gas discharge
2Loss of energy
If diffusion cooling is used to discharge unwanted heat, then heat discharge effectiveness is improved, but temperature distribution uniformity deteriorates due to voltage changes along the laser length
Solution Approach 1:
The patent applies local quality by creating non-uniform inductive characteristics along the electrode length that are specifically tailored to compensate for local voltage changes. The inductive elements are distributed or varied along the electrode to provide targeted voltage compensation at different positions, ensuring uniform temperature distribution while maintaining effective heat discharge through diffusion cooling
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 consistent discharge and temperature distribution across the laser system, reducing the need for gas circulation and minimizing production costs while achieving high-performance laser outputs for applications like metal processing.
Implementation Method 1
a dielectric element that is located on at least one of the electrodes on the discharge gap side... the dielectric element is configured to have a dielectric thickness ratio of d/∈res that decreases increasingly along a length of the laser... the dielectric constant is configured to vary the discharge distribution in the discharge gap
Implementation Method 2
the dielectric constant is configured to vary the discharge distribution in the discharge gap along the length of the laser... allowing for controlled discharge distribution and temperature management... to influence the dielectric constant and electric field strength
Data Source
AI summary
A diffusion-cooled gas laser system that includes a first and a second electrode and a discharge gap arranged between the electrodes, wherein a dielectric is arranged on at least one of the electrodes on the discharge-gap side. The system is characterized in that the dielectric thickness d/∈res the dielectric for influencing the discharge ∈res of distribution in the discharge gap varies along at least one dimension of the electrode on which the dielectric is arranged, wherein d is the thickness of the dielectric, and ∈res is the resultant constant of the dielectric, and, at its thickest point, has a thickness of at least 1 mm or is greater than one hundredth of the length of the electrode or is greater than one thousandth of a wavelength determined by the frequency of a radiofrequency electrical power to be coupled into the system.