Terahertz antenna profile detection system and method based on optical frequency comb
An optical frequency comb and surface detection technology, which is applied in the intersection of nonlinear optics, diffractive optics and applied optics, and can solve the problems of difficult to meet the requirements of high-precision detection of terahertz antenna shape and surface, and low measurement resolution.
Pending Publication Date: 2022-01-14
XIAN INSTITUE OF SPACE RADIO TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, it is a contact measurement, and its point-by-point measurement method leads to low measurement resolution, and the specular reflection on the surface of the terahertz antenna will cause the problem of introducing invalid measurement points due to signal interruption during measurement.
[0007] In summary, these traditional surface detection methods are difficult to meet the high-precision detection requirements of the terahertz antenna surface.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] Such as figure 1 As shown, a terahertz antenna profile detection system based on an optical frequency comb in the present invention includes: a first optical frequency comb laser, a second optical frequency comb laser, a first optical frequency comb laser, an optical comb light field generation module, A double optical comb interference module, a light field receiving module and a light field reconstruction module.
[0040] The optical comb light field generation module includes a spatial chirped optical system and a scanning servo control device;
[0041] The probe light output by the first optical frequency comb laser passes through the spatially chirped optical system in the optical comb light field generation module to form a one-dimensional optical comb light field, and irradiates to the surface of the antenna to be tested;
[0042] The one-dimensional optical comb light field passes through the scanning servo control device in the optical comb light field generat...
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
Login to View More Abstract
The invention discloses a terahertz antenna profile detection system and method based on an optical frequency comb. The terahertz antenna profile detection system and method are used for realizing high-precision rapid measurement of a terahertz antenna profile. The optical comb light field generation module performs spatial chirp on test light emitted by one optical frequency comb to form a multi-wavelength one-dimensional test light field, and then forms an orthogonal test light field through a translation or rotation device. And high-precision detection of the terahertz antenna profile is realized by utilizing the corresponding relation among the intensity, the spatial position and the phase of the light field. Asynchronous optical sampling is carried out on a test light field by using another optical frequency comb which has a tiny repetition frequency difference with test light, and then the terahertz antenna profile is restored through high-precision three-dimensional structure light field reconstruction, so that a reliable basis is provided for high-precision profile detection of the terahertz antenna, and a technical support is provided for design and implementation of the high-gain satellite-borne terahertz antenna.
Description
technical field [0001] The present invention faces the urgent need of high-precision surface detection of terahertz antennas. Based on the optical frequency comb technology, a terahertz antenna shape detection system and method based on optical frequency combs are provided. The content involves nonlinear optics, diffractive optics and Cross-cutting technical fields of applied optics. Background technique [0002] The terahertz frequency band has dual radiation characteristics of microwaves and light waves, so it has large communication transmission capacity, fast speed, higher resolution and precise positioning capabilities than microwaves. In recent years, spaceborne terahertz technology has broad application prospects in the fields of satellite communication, satellite remote sensing, and radar. At present, many satellites in the world have realized the spaceborne application of terahertz payloads. In the design and implementation of terahertz antennas, the surface accura...
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
Login to View More IPC IPC(8): G01B11/24
CPCG01B11/2441
Inventor 葛锦蔓谭庆贵李小军禹旭敏李琪薛亮蒋炜
Owner XIAN INSTITUE OF SPACE RADIO TECH