Dielectric Electrode Assembly for Uniform Laser Field
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Solution Overview
Problem
Existing gas lasers face inefficiencies due to non-uniform electric fields and complex manufacturing processes, particularly at high pressures, leading to energy wastage and instability in high-energy pulsed operations.
Innovation Solution
A dielectric electrode assembly with a cylindrical dielectric tube and surrounding structural dielectric, featuring metal electrodes with a flat cross-sectional geometry, where the relative dielectric constants of the structural dielectric, dielectric tube, and gas are interrelated to generate a uniform electric field, reducing manufacturing complexity and energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If profiled electrodes are used to achieve uniform electric field, then discharge uniformity is improved, but manufacturing complexity increases
Solution Approach 1:
A dielectric layer is introduced as an intermediary between the flat electrodes and the gas discharge region. This dielectric layer has a specifically designed thickness profile that is thicker at the edges and thinner at the center, which modifies the electric field distribution to achieve uniformity without requiring complex electrode profiles. The dielectric acts as a mediator that transforms the simple flat electrode geometry into an effective uniform field configuration.
Solution Approach 2:
The invention changes the parameter of electrode geometry from traditional profiled shapes to simple flat parallel electrodes. By maintaining flat electrodes with constant thickness and using a dielectric layer with varying thickness instead, the manufacturing complexity is reduced while still achieving the desired uniform electric field distribution for reliable gas discharge.
2Loss of energy
If curved electrodes are used to fill optical mode cross-section, then energy utilization is improved, but field uniformity deteriorates
Solution Approach 1:
The dielectric layer serves as a mediator that enables the use of simple flat electrodes while achieving both good energy utilization and field uniformity. The dielectric's varying thickness compensates for the geometric mismatch between flat electrodes and circular optical modes, distributing the electric field uniformly across the discharge region and maximizing energy utilization without the need for curved electrode geometries.
3Ease of manufacture
If flat parallel electrodes are used, then manufacturing is simplified, but energy waste increases due to mismatch with optical mode
Solution Approach 1:
The dielectric layer with non-uniform thickness acts as an intermediary that transforms the electric field distribution from the simple flat parallel electrodes. This dielectric structure ensures that the electric field is concentrated and uniformly distributed within the optical cavity region, preventing energy waste while maintaining the manufacturing simplicity of flat electrode geometry.
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 achieves high energy efficiency and simplified manufacturing by ensuring a uniform electric field matches the optical mode cross-section, minimizing energy wastage and enhancing the stability of high-power laser operations.
Implementation Method 1
selecting a material for the structural dielectric such that the relative dielectric constants of the structural dielectric, the dielectric tube, and the gas are interrelated and a uniform electric field is generated within the dielectric tube when power is applied to the metal electrodes
Data Source
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AI summary
A dielectric electrode assembly, and a method (600) of manufacture thereof, including: a dielectric tube (226) having a cylindrical cross-section and a relative dielectric constant, ε2, the dielectric tube (226) filled with a gas having a relative dielectric constant, ε1; a structural dielectric (225) having a relative dielectric constant, ε3 surrounding the dielectric tube (226); metal electrodes (224) on opposite sides of the structural dielectric (225), the metal electrodes (224) having a flat cross-sectional geometry; and the structural dielectric (225) made from a material selected such that the relative dielectric constants of the structural dielectric (225), the dielectric tube (226), and the gas are interrelated and a uniform electric field is generated within the dielectric tube (226) when power is applied to the metal electrodes (224).