Cavity-Enhanced Microscopy With Synchronized Sample and Mirror Motion
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Solution Overview
Problem
Existing cavity enhanced microscopy methods face challenges in achieving rapid data acquisition and efficient measurement due to the need for complex stabilization techniques and increased measurement time when resolving narrow cavity resonances.
Innovation Solution
A method and system for cavity enhanced microscopy that synchronizes the lateral motion of a sample with the variation of the cavity length, using a precomputed description to trigger an actuator system, allowing for synchronized data collection without additional stabilization procedures, thereby increasing the rate of data acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If secondary stabilization techniques are applied to achieve required mirror separation stability, then the stability is improved, but the device complexity increases
Solution Approach 1:
The patent extracts and removes the complex secondary stabilization techniques from the system. Instead of using additional lasers or complex feedback mechanisms, the invention directly uses the cavity transmission signal itself for stabilization, eliminating the need for separate stabilization subsystems while maintaining picometer-scale stability.
Solution Approach 2:
The cavity transmission signal serves multiple functions simultaneously: it provides both the measurement signal for microscopy and the feedback signal for stabilization. This multi-functionality eliminates the need for separate stabilization techniques, reducing device complexity while maintaining reliability.
2Measurement precision
If the cavity length is swept over an extended range to resolve narrow cavity resonances, then the measurement precision is improved, but the measurement time increases significantly
Solution Approach 1:
The patent applies preliminary action by using a pre-computed lookup table that stores the relationship between cavity length, lateral position, and resonance conditions. This allows the system to directly calculate and execute the optimal sweep trajectory without real-time computation, resolving narrow resonances quickly while maintaining high measurement precision.
Solution Approach 2:
The invention implements dynamic, synchronized motion where the lateral position and cavity length are varied together along pre-computed trajectories. This dynamic coordination allows the system to efficiently sample only the relevant parameter space needed to resolve resonances, dramatically reducing measurement time compared to exhaustive sweeping.
3Ease of operation
If the lateral motion of the sample and cavity length variation are performed independently, then the system operation is simplified, but the data acquisition efficiency decreases
Solution Approach 1:
The patent merges the lateral motion control and cavity length variation into a single synchronized operation. By combining these two independent motions into a coordinated sequence driven by a unified lookup table, the system achieves efficient data acquisition while maintaining operational simplicity through automated synchronization.
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
Enables rapid and efficient generation of two-dimensional or three-dimensional images of a sample by increasing the interaction time with light, enhancing detection sensitivity and reducing measurement time through synchronized motion and cavity length variation.
Implementation Method 1
Optical cavities formed by two opposing mirrors are known as tools to enhance the interaction between light and matter by forming an optical resonator. In general, only light with certain wavelengths may pass, enter or transmit the resonator, in which case the light is said to be in resonance with the optical cavity
Implementation Method 2
An actuator system is arranged to move the mirrors relative to each other along the length of the optical cavity for tuning the wavelength of the mode of said cavity
Implementation Method 3
A chemical sample is introduced inside the optical cavity, a radiation source illuminates the cavity and a detector detects radiation emitted from, transmitted through, or reflected from the optical cavity
Data Source
AI summary
According to a method for cavity enhanced microscopy, a sample is arranged on a sample carrier of an optical cavity, which is formed by a pair of opposing mirrors. A description defining a lateral motion of the sample during a predefined time interval and a variation of the cavity length during the time interval in a temporally synchronized manner is stored and an actuator system is triggered to move the sample carrier and/or at least one mirror of the pair of mirrors to effect the lateral motion of the sample with respect to the cavity and the variation of the cavity length according to the description. Light is introduced into the cavity and transmitted portions and/or reflected portions and/or scattered portions and/or emitted portions are detected to generate a sensor dataset.