Light Intensity Modulation Device for Pulsed Beam Waveform Distortion
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Solution Overview
Problem
Conventional pulsed beam compression devices do not address the issue of temporal intensity fluctuations in the pulsed beam, leading to distortion in the modulation waveform when a superimposition waveform is applied.
Innovation Solution
A light intensity modulation device that includes a light distributor, a light sensor, an analog-to-digital converter, a correction superimposition waveform calculator, a digital-to-analog converter, and a light intensity modulator, which calculates and applies correction superimposition waveform data to account for temporal intensity fluctuations, thereby minimizing distortion in the modulation waveform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a superimposition waveform is applied to a pulsed beam with temporal intensity fluctuations, then the modulation waveform achieves the desired shape, but distortion occurs in the modulation waveform
Solution Approach 1:
The patent applies preliminary action by calculating and storing correction values for temporal intensity fluctuations before the actual modulation process. The system pre-determines the relationship between temporal fluctuations and resulting waveform distortion, then uses these pre-calculated corrections to compensate for fluctuations in real-time, preventing distortion rather than correcting it after occurrence.
Solution Approach 2:
The patent implements feedback by measuring the actual temporal intensity fluctuations of the pulsed beam and using this information to dynamically adjust the superimposition waveform. The system continuously monitors the beam characteristics and modifies the correction applied based on actual conditions, ensuring accurate modulation despite variations in the input beam.
2Device complexity
If conventional beam pulse shaping is used, then the device structure is simple, but temporal intensity fluctuations cause waveform distortion
Solution Approach 1:
The patent introduces an intermediary correction mechanism between the conventional pulse shaping and the final modulation stages. This intermediary component calculates and applies correction values that account for temporal intensity fluctuations, acting as a mediator that bridges the simple conventional structure and the requirement for high waveform accuracy without fundamentally redesigning the entire system.
3Ease of operation
If no correction for temporal fluctuations is applied, then the device operation is simple, but distortion occurs in the modulation waveform
Solution Approach 1:
The patent applies self-service by enabling the system to automatically measure its own temporal intensity fluctuations and generate appropriate correction values without external intervention. The device monitors its own performance and adjusts the superimposition waveform accordingly, maintaining high modulation quality while keeping the operation simple and automated.
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 device effectively suppresses distortion in the modulation waveform of a pulsed beam even with temporal intensity fluctuations, improving the modulation process compared to conventional techniques.
Implementation Method 1
a light sensor to convert a first pulsed beam split by the light distributor into an electric signal
Data Source
AI summary
A device includes: a light distributor to split a pulsed beam; a light sensor to convert a first pulsed beam split by the light distributor into an electric signal; an ADC to convert the electric signal obtained by the light sensor, which is an analog signal, into a digital signal; a correction superimposition waveform calculation unit to calculate correction superimposition waveform data which is waveform data to correct a distortion due to a temporal intensity fluctuation of a pulsed beam on the basis of superimposition waveform data and the electric signal; a DAC to convert the correction superimposition waveform data calculated by the correction superimposition waveform calculation unit, which is a digital signal, into an analog signal; and a light intensity modulator to obtain an intensity-modulated beam by superimposing the correction superimposition waveform data obtained by the DAC onto a second pulsed beam split by the light distributor.