Time-Resolved Spectrum Measurement With Parallel Optical Delays
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Solution Overview
Problem
Existing time-resolved spectrum measurement technologies suffer from slow acquisition speed and large measurement errors due to the need to measure different delay windows multiple times using time-sharing methods, which are inherent in gating technology.
Innovation Solution
A time-resolved spectrum rapid measurement system employing a multi-path delay module to split signal light into multiple optical paths with varying optical distances, allowing simultaneous measurement of multiple delay windows, thereby improving acquisition speed and reducing measurement errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If time-sharing measurement mode is used to measure different delay windows sequentially, then the device complexity is reduced, but the acquisition speed decreases and measurement error increases
Solution Approach 1:
The signal light is divided into multiple optical paths with different delay times using beam splitters and delay lines. Each optical path corresponds to a specific delay window, allowing simultaneous parallel measurement of multiple delay windows rather than sequential measurement, thereby dramatically improving acquisition speed while maintaining manageable system complexity through modular optical path design
Solution Approach 2:
The measurement system transitions from temporal dimension (sequential time-sharing measurement) to spatial dimension (parallel multi-path measurement). By distributing measurements across multiple spatial optical paths with different delay characteristics, the system achieves simultaneous acquisition of multiple delay windows, resolving the contradiction between simplicity and speed
2Device complexity
If time-sharing measurement mode is used to measure different delay windows sequentially, then the device complexity is reduced, but the measurement error increases
Solution Approach 1:
The signal light is divided into multiple optical paths with different delay times using beam splitters and delay lines. Each optical path corresponds to a specific delay window, allowing simultaneous parallel measurement of multiple delay windows rather than sequential measurement, thereby dramatically improving acquisition speed while maintaining manageable system complexity through modular optical path design
Solution Approach 2:
The measurement system transitions from temporal dimension (sequential time-sharing measurement) to spatial dimension (parallel multi-path measurement). By distributing measurements across multiple spatial optical paths with different delay characteristics, the system achieves simultaneous acquisition of multiple delay windows, resolving the contradiction between simplicity and speed
3Productivity
If multiple delay windows are measured in parallel using multi-path delay module, then the acquisition speed is improved, but the device complexity increases
Solution Approach 1:
The signal light is divided into multiple optical paths with different delay times using beam splitters and delay lines. Each optical path corresponds to a specific delay window, allowing simultaneous parallel measurement of multiple delay windows rather than sequential measurement, thereby dramatically improving acquisition speed while maintaining manageable system complexity through modular optical path design
Solution Approach 2:
The multi-path delay module serves multiple functions simultaneously: it creates time delays, splits signal paths, and enables parallel measurement of multiple delay windows. This multi-functionality reduces the need for separate measurement systems for each delay window, making the increased complexity worthwhile by achieving rapid simultaneous acquisition across all delay windows
4Measurement precision
If multiple delay windows are measured in parallel using multi-path delay module, then the measurement error is reduced, but the device complexity increases
Solution Approach 1:
The signal light is divided into multiple optical paths with different delay times using beam splitters and delay lines. Each optical path corresponds to a specific delay window, allowing simultaneous parallel measurement of multiple delay windows rather than sequential measurement, thereby dramatically improving acquisition speed while maintaining manageable system complexity through modular optical path design
Solution Approach 2:
The multi-path delay module serves multiple functions simultaneously: it creates time delays, splits signal paths, and enables parallel measurement of multiple delay windows. This multi-functionality reduces the need for separate measurement systems for each delay window, making the increased complexity worthwhile by achieving rapid simultaneous acquisition across all delay windows
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 enables rapid acquisition of time-resolved spectra by measuring multiple delay windows in parallel, significantly enhancing measurement speed and reducing errors, thus simplifying the test process and laying a foundation for broader application.
Implementation Method 1
add a different optical distance in each optical path to extend the time for the signal light produced by the samples to reach a detector
Implementation Method 2
a spectrometer module, configured to spatially distinguish signal light of different wavelengths in each optical path
Implementation Method 3
a detector module, configured to detect spatially distinguished signal light of the plurality of optical paths in parallel
Data Source
AI summary
Disclosed is a time-resolved spectrum rapid measurement system and method, the system including a pulse laser module, a sample stage module, a control computer module, a detector module, a spectrometer module, and a multi-path delay module. The multi-path delay module is configured to split the signal light produced by the samples in the sample stage module to form a plurality of optical paths; add a different optical distance in each optical path to extend the time for the signal light produced by the samples to reach a detector; and make the time for the signal light in each optical path to reach the detector different, to realize multi-path delay. By providing a multi-path delay module in the system, the present disclosure can measure the spectra of a plurality of delay windows in parallel, improving the measurement speed of time-resolved spectra while reducing the measurement error.