Unlock instant, AI-driven research and patent intelligence for your innovation.

A method and device for testing the vibration sensitivity of a transportable optical reference cavity

A reference cavity and sensitivity technology, applied in the field of optical reference cavity, can solve the problems of expensive test equipment, difficult operation, complex vibration sensitivity test system, etc., and achieve the effect of reducing economic cost and time cost

Active Publication Date: 2022-01-18
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vibration sensitivity test system is still very complicated, not only difficult to operate, but also expensive to test instruments

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
  • A method and device for testing the vibration sensitivity of a transportable optical reference cavity
  • A method and device for testing the vibration sensitivity of a transportable optical reference cavity
  • A method and device for testing the vibration sensitivity of a transportable optical reference cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0022] The present invention is realized through the following technical solutions:

[0023] Step 1, the laser output laser is locked to the resonant frequency of the optical reference cavity 1 through the servo control system (frequency locking system) to obtain a frequency-stabilized laser as a reference

[0024] Step 2: split the output laser beam from the laser, and couple it into the optical reference cavity 2 to be tested after shifting the frequency by the acousto-optic modulator

[0025] Step 3, (Using the standing wave effect of the optical reference cavity, when the difference between the laser frequency and the resonance frequency of the reference cavity is less than half of the line width of the reference cavity, the laser can accumulate significantly in the opt...

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 provides a method and device for testing the vibration sensitivity of a transportable optical reference cavity, using the corresponding relationship between the resonant peak of the optical reference cavity and the laser frequency in the cavity-stabilized narrow-linewidth laser system, and periodically sweeping the frequency through the acousto-optic modulator The position relationship between the resonant peak of the optical reference cavity before and after inversion and the triangular wave sweep signal of the acousto-optic modulator is obtained by using the method, and then the change value of the resonance frequency of the reference cavity is obtained under the condition of 2g acceleration change, and the vibration sensitivity of the reference cavity is measured. The invention is convenient and quick, and can reduce operation complexity and equipment cost.

Description

technical field [0001] The invention belongs to the field of optical reference cavities, and relates to a vibration sensitivity test method, which is especially suitable for the vibration sensitivity test of a transportable optical reference cavity. Background technique [0002] As a means of high-precision measurement, narrow-linewidth lasers with extremely high frequency stability are widely used in scientific and technological fields such as measurement of fundamental physical constants, gravitational wave detection, geodesy, and atomic optical clocks. There are many methods to improve laser frequency stability and narrow laser linewidth, among which Pound-Drever-Hall (PDH) frequency stabilization technology based on optical reference cavity is one of the most commonly used methods to realize ultra-narrow linewidth lasers. This method combines phase modulation spectroscopy technology with optical heterodyne detection technology, and precisely locks the laser frequency on ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/08G01H13/00
CPCG01M11/081G01H13/00
Inventor 陈龙刘涛江晨晖焦东东张林波许冠军范乐董瑞芳张首刚
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI