Method and system for acquiring frequency domain information of ultrafast optical field
An acquisition method and frequency-domain technology, applied in the field of frequency-domain information acquisition in ultrafast light fields, can solve problems such as one-sided results, uncertain timing, and complex space
Active Publication Date: 2019-09-06
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 15 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in some research application scenarios, such as the establishment process of the laser and the dynamic process of the laser, it is often a single non-repeatable event, and the timing of its occurrence is uncertain. Domain real-time ultrafast measurement technology and system
In addition, ultrafast light fields generally have spatial complexity, that is, there are differences between signals at different spatial locations. However, the current frequency domain ultrafast measurement technology only has the ability to distinguish time, resulting in one-sided results.
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
[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0037] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiment...
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 relates to a method and a system for acquiring frequency domain information of an ultrafast optical field. The method comprises the following steps of: after an ultrafast optical field signal and a synchronous reference pulse signal are combined, performing optical branching processing to obtain a first beam combination signal and a second beam combination signal; acquiring first frequency domain information of a pulse light portions at each spatial point in the first beam combination signal; acquiring second frequency domain information of a continuous light portion at each spatial point in the second beam combination signal; aligning the first frequency domain information and the second frequency domain information according to synchronous reference pulse signals respectively included in the first frequency domain information and the second frequency domain information; and after the first frequency domain information and the second frequency domain information are aligned, fusing the first frequency domain information and the second frequency domain information to obtain complete frequency domain information of the ultrafast optical field signal. By adopting the method and the system for acquiring frequency domain information of the ultrafast optical field, complete frequency domain information of the ultrafast optical field signals can be obtained.
Description
technical field [0001] The present application relates to the technical field of ultrafast signal measurement, in particular to a method and system for acquiring frequency domain information of an ultrafast light field. Background technique [0002] Frequency domain ultrafast measurement technology is a means of characterizing frequency domain information of ultrafast light fields (light fields as short as picoseconds and femtoseconds), and is used in the study of chemical reaction kinetics, material energy level structure relaxation characteristics, etc. It plays an important role in the field of physics and materials research, and has become a basic representation method and an indispensable research method in the field of physics and materials research. Correlated frequency domain (spectrum) ultrafast measurement techniques include transient fluorescence spectroscopy, transient absorption spectroscopy, time-correlated single photon counting, time-resolved four-wave mixing...
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 Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/02
CPCG01J3/0205G01J3/2889
Inventor 杨中民文晓晓孟超乔田林巍
Owner SOUTH CHINA UNIV OF TECH