Laser Pulse Width Control With Integrated Waveform Manipulation
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Solution Overview
Problem
Existing laser devices require multiple components for pulse width extension and compression, leading to increased device size due to dispersion, which complicates the design and increases complexity.
Innovation Solution
A laser device with a pulse width control unit that includes a laser amplifier and a pulse waveform manipulation unit, capable of manipulating the pulse waveform before amplification to change the pulse width, reducing the need for additional components and minimizing device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple components (lens, optical fiber, diffraction gratings) are used for pulse width extension and compression, then pulse width control is achieved, but device size increases
Solution Approach 1:
The patent combines the pulse width manipulation function and laser amplification function into a single integrated system. The pulse width control unit integrates the manipulator that changes pulse width and the laser amplifier that amplifies the light, eliminating the need for separate components for extension and compression found in conventional techniques.
Solution Approach 2:
The pulse width control unit serves multiple functions: it manipulates the pulse waveform to change pulse width, amplifies the laser light, and outputs the controlled light. This multi-functional design replaces the multiple specialized components (lens, optical fiber, diffraction gratings) required in conventional separate extension and compression systems.
2Adaptability or versatility
If dispersion-based pulse width control is used, then pulse width can be changed, but device complexity increases
Solution Approach 1:
The patent merges the pulse width manipulation mechanism with the laser amplifier into a single integrated pulse width control unit. This integration reduces the number of separate components and simplifies the overall device structure while maintaining the ability to adjust pulse width.
Solution Approach 2:
The patent extracts the essential function of pulse width control from the complex dispersion-based system and implements it through a dedicated manipulator within the pulse width control unit. This extraction simplifies the system by focusing on the core manipulation function rather than using multiple dispersion components.
3Adaptability or versatility
If conventional pulse width extension and compression techniques are used, then pulse width control is achieved, but the number of components increases
Solution Approach 1:
The patent combines the pulse width manipulation function and laser amplification function into a single integrated system. The pulse width control unit integrates the manipulator that changes pulse width and the laser amplifier that amplifies the light, eliminating the need for separate components for extension and compression found in conventional techniques.
Solution Approach 2:
The pulse width control unit serves multiple functions: it manipulates the pulse waveform to change pulse width, amplifies the laser light, and outputs the controlled light. This multi-functional design replaces the multiple specialized components (lens, optical fiber, diffraction gratings) required in conventional separate extension and compression systems.
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 allows for effective pulse width adjustment while reducing the device size, enabling efficient pulse width manipulation and increased intensity of the output laser light, suitable for laser processing applications.
Implementation Method 1
a first laser amplifier configured to amplify the pulsed laser light
Implementation Method 2
The pulse waveform manipulation unit may have a saturable absorber
Implementation Method 3
The pulse waveform manipulation unit may have a diffraction grating pair
Implementation Method 4
The pulse waveform manipulation unit may have a chirped diffraction grating
Data Source
AI summary
A laser device according to one embodiment includes a laser light source configured to output pulsed laser light L1 and a pulse width control unit configured to amplify the pulsed laser light output from the laser light source, change a pulse width of the pulsed laser light, and output the pulsed laser light. The pulse width control unit includes a first laser amplifier configured to amplify the pulsed laser light and a pulse waveform manipulation unit disposed between the first laser amplifier and the laser light source and configured to manipulate a pulse waveform of the pulsed laser light.