Magnetic Sensor Detection Using Parallel ODMR Frequency Tracking
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Solution Overview
Problem
Existing spin-based quantum sensors require complex detection methods to identify characteristic minima in fluorescence signals for precise magnetic field measurement, which are inefficient and time-consuming.
Innovation Solution
A detection device for magnetic sensors utilizing a crystal body with defects, employing a multi-channel approach to simultaneously determine two excitation frequencies of fluorescence signals, allowing for continuous and simplified detection of magnetic fields by identifying minima in the fluorescence spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-channel detection method is used to identify fluorescence signal minima, then the device complexity is reduced, but the measurement precision and detection efficiency deteriorate due to time-consuming sequential scanning
Solution Approach 1:
The detection system is segmented into multiple independent detection channels, each tuned to a specific frequency range. This allows parallel detection of multiple fluorescence minima simultaneously, resolving the contradiction by enabling precise measurement without sequential scanning while maintaining manageable device complexity through modular channel design
Solution Approach 2:
The detection approach transitions from single-dimensional sequential frequency scanning to multi-dimensional parallel frequency detection. By introducing multiple detection channels operating simultaneously at different frequencies, the system achieves both high precision and reduced complexity through dimensional expansion of the detection space
2Device complexity
If sequential frequency scanning is used to detect fluorescence minima, then the device complexity is reduced, but the detection time increases significantly
Solution Approach 1:
Multiple detection channels are pre-configured and tuned to specific frequency ranges before measurement begins. This preliminary setup allows immediate parallel detection of multiple minima without sequential scanning, reducing detection time while keeping device complexity manageable through pre-engineered channel configurations
Solution Approach 2:
The detection system maintains continuous operation across multiple frequency channels simultaneously, eliminating the interruptions and sequential steps inherent in single-channel scanning. This continuous multi-frequency detection achieves both time efficiency and acceptable device complexity through sustained parallel measurement
3Productivity
If multiple excitation frequencies are detected simultaneously, then the measurement efficiency is improved, but the device complexity increases
Solution Approach 1:
The detection device is segmented into multiple specialized detection channels, each responsible for a specific frequency range. This segmentation enables simultaneous detection of multiple excitation frequencies while managing complexity through functional division, allowing high measurement efficiency without requiring a single overly complex system
Solution Approach 2:
Each detection channel is designed with universal functionality to detect fluorescence minima within its designated frequency range. This multi-functional design allows the system to efficiently detect multiple frequencies simultaneously while controlling overall device complexity through standardized, reusable detection modules
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 simultaneous and continuous detection of magnetic field information, reducing the effort required to identify fluorescence signal minima and improving measurement efficiency.
Implementation Method 1
The magnetic field can then be optically detected on the basis of the magnetic electron spin resonances of the spin triplet of the ground state of the defect in the crystal body (ODMR, optically-detected magnetic resonance).
Implementation Method 2
a detector for detecting a magnetic-field-dependent fluorescence signal from the crystal body
Implementation Method 3
the magnetic field can then be optically detected on the basis of the magnetic electron spin resonances of the spin triplet of the ground state of the defect
Data Source
AI summary
A detection device for a magnetic sensor for detecting a magnetic field by means of a crystal body having at least one defect comprises a light source for exciting the defect; an excitation unit for producing a first excitation signal having a first specifiable frequency and a second excitation signal having a second specifiable frequency; a detector of a magnetic-field-dependent fluorescence signal of the crystal body; and an evaluation unit designed to determine the first excitation frequency and the second excitation frequency of the first and second excitation signals on the basis of the fluorescence signal such that the fluorescence signal as a function of the frequency has a minimum at the first excitation frequency and/or at the second excitation frequency Also disclosed is a magnetic sensor, a sensor device, and a method for detecting a magnetic field.