Two-Photon Microscopy Pulse Width Correction
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Solution Overview
Problem
Two-photon microscopy technologies face distortion issues due to pulse width modulation caused by the optical system, which affects the accuracy of measurements and sample analysis.
Innovation Solution
A two-photon microscopy system that includes a light source, a pulse width correction device, and two-photon sensors to measure and correct the difference in pulse widths of laser light before and after passing through the optical system, using negative dispersion values to minimize distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser light passes through the optical system, then the light can reach the sample for imaging, but the pulse width is modulated causing distortion
Solution Approach 1:
The patent applies preliminary action by measuring the pulse width of the laser light before it enters the optical system using a first photodetector, and then using this pre-measured value to correct the pulse width after passing through the optical system. This allows the system to compensate for distortion before it affects the final measurement, thereby maintaining measurement accuracy while allowing the light to pass through the optical system.
Solution Approach 2:
The patent implements feedback by continuously measuring the pulse width at different points in the optical path (before and after the optical system) and using this feedback information to adjust and correct the pulse width distortion. The system uses the measured pulse width values to calculate correction factors that compensate for the distortion introduced by the optical system, thereby resolving the contradiction between maintaining measurement accuracy and avoiding pulse width modulation.
2Measurement precision
If pulse width correction is implemented, then measurement accuracy improves, but device complexity increases
Solution Approach 1:
The patent uses an intermediary approach by introducing photodetectors as mediator components that measure pulse width at critical points in the optical path. These photodetectors serve as intermediaries between the laser source and the sample, providing measurement data that enables correction without requiring complex real-time modulation control systems. This intermediary measurement approach achieves high measurement precision while keeping the added device complexity manageable.
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 minimizes laser light distortion, ensuring accurate pulse width correction and improved measurement precision in two-photon microscopy applications.
Implementation Method 1
correcting a pulse width of the laser light passing through the optical system, thereby minimizing a distortion of the laser light due to the optical system
Data Source
AI summary
Provided is a two-photon spectroscopy including a light source configured to generate first laser light having a pulse, a pulse width correction device configured to receive the first laser light to output a second laser light, an optical system through which the second laser light passes, a first two-photon sensor configured to measure a first pulse width of the first laser light generated from the light source, and a second two-photon sensor configured to measure a second pulse width of the second laser light passing through the optical system, wherein the pulse width correction device corrects a difference between the first pulse width and the second pulse width.