Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Coherent population trapping (CPT) rubidium atom magnetometer

A technology of coherent population captivity and magnetometer, applied in the direction of the size/direction of the magnetic field, using magneto-optical equipment for magnetic field measurement, etc., can solve the problem of insufficient sensitivity, achieve the effect of reducing interference, high sensitivity, and reducing power consumption

Inactive Publication Date: 2019-06-07
CHINA JILIANG UNIV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of insufficient sensitivity of the existing magnetometer, the present invention provides a CPT rubidium atomic magnetometer, which can accurately measure the magnetic field and greatly improve the sensitivity of the magnetic field measurement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coherent population trapping (CPT) rubidium atom magnetometer
  • Coherent population trapping (CPT) rubidium atom magnetometer
  • Coherent population trapping (CPT) rubidium atom magnetometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, a CPT rubidium atomic magnetometer includes a VCSEL laser (1), a collimator lens (2), a λ / 4 wave plate (3), an ITO heater (4), an atomic gas chamber (5), and a magnetic shield Bucket (6), photoelectric detector (7), data acquisition module (8), temperature control module (9), upper computer (10) and circuit control module (11).

[0024] The assembly relationship between the components is as follows: the atomic gas chamber (5) is placed in the magnetic shielding barrel (6), the magnetic field to be measured passes through the atomic gas chamber (5) parallel to the optical path, the collimating lens (2), λ / 4 The wave plate (3) and the ITO heater (4-1) are sequentially placed on the optical path of the VCSEL laser (1) and the atomic gas chamber (5), and the ITO heater (4-3) is placed behind the VCSEL la...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a coherent population trapping (CPT) rubidium atom magnetometer. The CPT rubidium atom magnetometer comprises a vertical cavity surface emitting laser (VCSEL), a collimating lens, a gamma / 4 wave plate, an indium tin oxide (ITO) heater, an atomic vapor cell, a magnetic shielding barrel, a photovoltaic detector, a data collecting module, a temperature control module, an uppercomputer and a circuit control module. Under the action of a magnetic field in parallel to a light path, CPT signals generated by a modulating laser which passes through the rubidium atomic vapor cell are measured, and then according to the relation between the frequency difference and the magnetic field intensity of the CPT signals, precise measurement of the magnetic field is realized. The CPTrubidium atom magnetometer reduces the interference of external tangled magnetic fields, improves the stability of the output CPT signals, has the advantages that the sensitivity is high, the power consumption is low, the size is small and the like, and has significant application value in the aspects of biomedicine, geophysics, quantum frequency standard, military detection and the like.

Description

technical field [0001] The invention relates to a coherent population trapped CPT rubidium atom magnetometer, which belongs to the technical field of atomic magnetometers. Background technique [0002] In modern technology, magnetic detection technology is widely used. Magnetic field measurement can be used in geophysical research, oil and gas and mineral exploration, military defense, medical diagnosis, geological survey and archaeological research and other fields. Among them, weak magnetic detection is a very important and promising research direction. . At present, superconducting quantum interference devices (Superconducting Quantum Interference Device) are mainly used for weak magnetic detection, which has high sensitivity for the measurement of weak magnetic fields, but the magnetometer device is complex, has high requirements for the working environment, and high maintenance costs. Poor universality is not conducive to the research and development of weak magnetic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R33/032
Inventor 方维金怀洲金尚忠赵春柳石岩陈义赵天琦周亚东
Owner CHINA JILIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com