Novel all-optical type laser light pump magnetometer and realization method thereof

An optical pump magnetometer, laser technology, applied in the direction of magnetic resonance measurement, etc., to achieve the effect of simple operation

Active Publication Date: 2016-08-17
HANGZHOU QUANTUM SENSING TECH CO LTD
View PDF7 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An object of the present invention is to provide a new all-optical laser optical pump magnetometer in o

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
  • Novel all-optical type laser light pump magnetometer and realization method thereof
  • Novel all-optical type laser light pump magnetometer and realization method thereof
  • Novel all-optical type laser light pump magnetometer and realization method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention is further analyzed below in conjunction with accompanying drawing.

[0036]Under the magnetic field to be measured, the atomic energy level of the alkali metal will split, and the splitting situation is related to the size of the magnetic field to be measured. When a beam of circularly polarized laser light passes through the gas of alkali metal atoms, if the laser frequency completely resonates with the ground state energy level of the split alkali metal atoms, the alkali metal atoms will be polarized by the laser pump, so that their absorption rate of the laser light will decrease. At this time, Use another beam of modulated circularly polarized laser to interact with the alkali metal atoms at the same time to depolarize the alkali metal atoms. The absorption of the laser is enhanced and the transmission is weakened. By measuring the relationship between the modulation frequency and the transmitted light intensity of the laser, the measured The ...

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 novel all-optical type laser light pump magnetometer and a realization method thereof. The method comprises the following steps: putting a weak-magnetic-field probe into a magnetic field to be detected at a constant temperature; regulating two laser device control circuits respectively to ensure that two laser frequencies are subjected to energy level transition resonance with a D1 line and a D2 line of alkali metal atoms; regulating angles of a half-wave plate optical axis, a quarter-wave plate optical axis and respective laser polarization to ensure that two beams of laser form round polarization with the polarization phase difference of 180 degrees; regulating two laser devices, a half-wave plate, a polarization beam splitting prism and a quarter-wave plate to ensure that the two beams of laser are completely overlapped on the weak-magnetic-field probe; detecting the laser frequency and laser subjected to the energy level transition resonance with the D1 line of the alkali metal atoms by a photoelectric converting device; and acquiring and carrying out signal processing on a detected light intensity value through data acquisition and processing equipment to obtain magnetic induction intensity B of a magnetic field to be detected. The novel all-optical type laser light pump magnetometer has the advantages of simplicity in operation and no electromagnetic interferences and can realize all-optical property of the weak-magnetic-field probe.

Description

technical field [0001] The invention belongs to the technical field of weak magnetic field measurement, and relates to a new all-optical laser optical pump magnetometer and its implementation method, which are used to eliminate external electromagnetic interference of the optical pump magnetometer and solve the problem that the weak magnetic field probes in the traditional optical pump magnetometer cannot be densely distributed. array and use in high-voltage, irradiated environments. Background technique [0002] In modern technology, the detection of weak magnetic fields is a very important technology. At present, the atomic magnetometer is one of the main weak magnetic field detection instruments. The optical pump magnetometer scheme is the most sensitive and practical among the atomic magnetometers, and it is also one of several high-precision atomic magnetometer schemes for commercialization. However, since the traditional optically pumped magnetometer needs to add a ra...

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): G01R33/26
CPCG01R33/26
Inventor 梁尚清杨国卿
Owner HANGZHOU QUANTUM SENSING TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap