Three-domain information acquisition method and system for ultrafast light fields
A technology of domain information and fast light, applied in the field of three-domain information acquisition of ultra-fast light field, can solve the problem of real-time measurement of difficult time-space-frequency three-domain information
Active Publication Date: 2020-01-21
SOUTH CHINA UNIV OF TECH
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However, the measurement results obtained by the traditional scheme are one-sided, and it is difficult to conduct a comprehensive real-time measurement of the space-time-frequency three-domain information of the ultrafast light field.
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[0023] 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.
[0024] 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...
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The present application relates to a method and system for acquiring three-domain information of an ultrafast light field. The method includes: acquiring time domain information of each space point position in the first signal to be tested; acquiring first frequency domain information of the continuous light part at each space point position in the second signal to be tested; acquiring The second frequency domain information of the pulsed light part at each spatial point position; fusing the time domain information, the first frequency domain information and the second frequency domain information, and determining the ultrafast light field according to the information obtained by fusion The three-domain information of the signal; wherein, the first signal to be tested, the second signal to be tested, and the third signal to be tested are three-way signals obtained by splitting the ultrafast light field signal to be tested. The ultrafast light field three-domain information acquisition method and system provided by the present invention can realize real-time measurement of ultrafast light field signal space-time-frequency three-domain information, and has high integrity and timeliness.
Description
technical field [0001] The present application relates to the field of ultrafast signal measurement technology, in particular to a method and system for acquiring ultrafast light field three-domain information. Background technique [0002] Due to the wide application of ultrashort pulses in research fields such as femtosecond chemistry, attosecond science, and free electron lasers, it is of great significance to develop ultrafast optical field (picosecond, femtosecond time order) measurement technology. Early research on ultrafast measurement technology generally only focused on certain aspects of time domain, space domain and frequency domain, but with the development of vortex optical communication, space-time soliton pulses, multi-mode mode-locked lasers, high-dimensional transient laser dynamics, etc. With the deepening of research, realizing the real-time measurement of ultrafast light field time-space-frequency three domains has become the ultimate goal of the develop...
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IPC IPC(8): G01J11/00H04Q11/00
CPCG01J11/00H04Q11/0062G01J9/04G01J9/00G01J3/00
Inventor 杨中民林巍孟超文晓晓乔田
Owner SOUTH CHINA UNIV OF TECH