Movable Homogenizing Optics for Variable Laser Ablation Fluence
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Solution Overview
Problem
Current laser ablation systems for spectrometry lack the ability to adjust laser beam parameters, specifically energy density and beam size, which limits their versatility in producing either larger ablation spots with medium energy density or smaller spots with higher energy density, essential for various analytical applications.
Innovation Solution
Incorporating a motorized homogenizing optics adjustment system that allows for precise movement of the first and second homogenizing optics, enabling adjustable beam size and energy density by varying the position of these optics, thereby controlling the fluence of the laser beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the laser beam parameters are fixed, then the system structure is simple, but the system cannot produce different ablation spot sizes and energy densities required for various analytical applications
Solution Approach 1:
The patent applies the dynamics principle by making the homogenizing optics movable rather than fixed. A motorized adjustment system allows the homogenizing optics to be positioned at different locations along the beam path, enabling dynamic control of beam size and energy density. This transforms a static optical system into a dynamic one that can adapt to different analytical requirements while maintaining a relatively simple overall structure.
2Area of moving object
If the beam size is increased to create larger ablation spots, then the energy density decreases, but larger spots are needed for certain analytical applications
Solution Approach 1:
The patent applies parameter changes by adjusting the position of the homogenizing optics to modify beam parameters. By moving the homogenizing optics to different positions, the system can change the beam size and energy density independently. This allows the user to select optimal parameters for each analytical application, whether requiring large spots with medium energy density or small spots with high energy density.
3Area of moving object
If the beam size is decreased to create smaller ablation spots, then the energy density increases, but smaller spots are needed for other analytical applications
Solution Approach 1:
The motorized adjustment system enables dynamic control of beam size, allowing the system to switch between small and large ablation spots as needed. This dynamic capability ensures the system can adapt to different analytical methods and applications, maintaining high versatility while using a single instrument configuration.
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 solution allows for flexible adjustment of beam size and energy density, enhancing the system's capability to produce either larger or smaller ablation spots with desired energy characteristics, improving the analytical precision and versatility of the laser ablation system.
Implementation Method 1
a first homogenizer for first receiving the laser beam and for refracting the laser beam; and a second homogenizer for second receiving the laser beam from the first homogenizer and for refracting the laser beam from the first homogenizer
Data Source
AI summary
An ablation system for ablating a material can include a laser source, a set of homogenizing optics, and a homogenizing optics adjustment device. The laser source is for generating a laser beam. The set of homogenizing optics receives the laser beam and includes a first homogenizer and a second homogenizer. The homogenizing optics adjustment device carries the homogenizing optics, the homogenizing optics adjustment device configured to selectably adjust the position of at least one of the first homogenizer and the second homogenizer in order change a size of the laser beam, with a change in size of the beam changing the fluence thereof. The ablation system can be incorporated within a laser-ablation based analytical system, where the laser-ablation based analytical system includes a spectrometer.