Pulsed Laser Beam Deflection for Secondary Radiation Control
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Solution Overview
Problem
Existing laser systems for generating pulsed laser beams struggle to efficiently control the interaction of laser pulses with target materials, particularly in terms of directing the laser beams accurately and managing secondary radiation generation.
Innovation Solution
A laser system comprising a beam deflection unit, a control unit, and a laser beam source that allows for the deflection and splitting of pulsed input laser beams. The control unit operates in two modes: one where the pulsed laser beam is directed onto the target material for interaction, and another where it is positioned to miss the target, enabling control over secondary radiation generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the laser beam is continuously directed onto the target material for interaction, then the productivity of target material processing is improved, but the generation of secondary radiation increases causing harmful effects
Solution Approach 1:
The patent applies periodic action by alternating the laser beam between two states: directing it onto the target material for interaction (first state) and positioning it to miss the target (second state). This periodic switching enables control over secondary radiation generation while maintaining productivity during the interaction phases. The beam deflection unit facilitates this temporal modulation of beam positioning.
Solution Approach 2:
The patent implements dynamics by making the laser beam position adjustable and changeable over time through the beam deflection unit. The control unit dynamically switches between different beam positions (onto target vs. missing target) based on operational requirements. This dynamic positioning capability allows optimization of both processing efficiency and radiation management.
2Manufacturing precision
If the beam deflection unit is used to direct the laser beam onto the target area, then the manufacturing precision of target interaction is improved, but the device complexity increases
Solution Approach 1:
The beam deflection unit serves multiple functions: it positions the laser beam onto the target area for precise interaction, positions the beam to miss the target for radiation control, and enables switching between these states. This multi-functionality justifies the added complexity by consolidating positioning and control operations into a single versatile component.
Solution Approach 2:
The beam deflection unit acts as an intermediary between the laser beam source and the target material. It mediates the beam's position and direction without requiring modifications to the laser source itself. This intermediary approach enables precise beam positioning and radiation management while keeping the laser source simple and unchanged.
3Object-generated harmful factors
If the laser beam is positioned to miss the target area for controlling secondary radiation, then the harmful effects are reduced, but the productivity of target material processing decreases
Solution Approach 1:
The system uses periodic action by alternating between beam positions: onto the target for productive interaction and missing the target for radiation control. This temporal modulation allows the system to achieve both objectives - maintaining productivity during interaction phases while controlling secondary radiation during non-interaction phases.
Solution Approach 2:
The beam deflection unit enables continuous operation by smoothly transitioning the beam between productive and non-productive states. Rather than interrupting the laser source, the system maintains continuous beam generation while modulating its position, ensuring that useful action (target interaction) occurs continuously during designated phases without interruption.
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 system effectively controls the interaction of pulsed laser beams with target materials, allowing for precise management of secondary radiation generation and target material preparation, without requiring technical intervention on the laser beam source.
Implementation Method 1
a beam deflection unit, into which the input laser beam can be coupled, by means of which the input laser beam can be deflected and/or split
Data Source
AI summary
A laser system includes a beam deflection unit, a control unit, a laser beam source for providing a pulsed input laser beam for coupling into the beam deflection unit, and a target area for arranging a target material. The control unit is configured to control and/or regulate a position of a pulsed laser beam emerging from the beam deflection unit by actuating the beam deflection unit. The control unit has a first operating mode, in which the position of the pulsed laser beam is selected so that it is directed onto the target area, and a second operating mode, in which the position of the pulsed laser beam is selected so that it misses the target area. Pulsed laser beams provided in the second operating mode are positioned symmetrically in a chronological and/or spatial average with respect to the pulsed laser beams formed in the first operating mode.