A method and device for atomic time-course single-shot plenoptic high-resolution imaging
A time-course, high-resolution technique used in instrumentation and other directions
Active Publication Date: 2022-06-21
SHENZHEN UNIV
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[0006] The purpose of this application is to provide a method and device for atomic time-course single-shot plenoptic high-resolution imaging, to solve the technical problem of single-shot plenoptic and high-resolution imaging without atomic time-course in the prior art
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[0059] In order to promote scientific development and conduct more in-depth research on microscopic particles, it is necessary to obtain complete information on the atomic time process. Therefore, it is required that the image set of the atomic time process taken can record the movement process of the particle in space and time continuously. , the motion information of the particles cannot be lost. In theory, the image set that can meet the above requirements can only be realized by the framing-scanning simultaneous photography technology.
[0060] Based on the above understanding, this embodiment constructs a framing-scanning simultaneous imaging technology, which is realized by combining two imaging technologies of non-collinear optical parametric amplified idler multi-frame imaging and extended frequency domain holographic scanning imaging. , which can simultaneously acquire multiple images and continuous scan images of picosecond / sub-picosecond transient processes at one ti...
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The present application provides a method for atomic time-course single-shot plenoptic high-resolution imaging, including: processing femtosecond laser light emitted by a femtosecond laser through a front-end frequency doubler, and then using a dichroic mirror to separate different wavelength laser light to obtain Fundamental frequency light and first frequency doubled light, the first frequency doubled light is used as the sampling light of the framing imaging system; the fundamental frequency light is split by the first beam splitter, and one path is converted into the second frequency doubled by the second frequency doubler The light is used as the excitation light of the ultrafast event; the other path passes through the disperser to become a linear chirped optical pulse; After the fast event area, the detection light carries the space and time information of the ultrafast event; the detection light is divided into two beams by the second beam splitter, and the reflected light enters the scanning imaging system to obtain the extended frequency domain holographic scanning imaging; the second beam splitter The beam-split transmitted light is used as the signal light of the framing imaging system, and the framing imaging with the same time base and the same space base as the scanning imaging is obtained.
Description
technical field [0001] The present application relates to the technical field of imaging, and in particular, to a method and device for single-shot all-optical high-resolution imaging of an atomic time course. Background technique [0002] The vibration period of a single atom is between 10fs and 1ps. The atomic motion in this period basically determines the formation of new solid phases in physics, the transfer of kinetic energy in chemical reactions, and the completion of biological function processes. At the atomic level, three Both are the same as the study of the laws of motion of atoms. [0003] Observing the light information of the time course of atoms, accurately revealing the physical, chemical and biological pictures and changing laws that occur in the process of atomic motion, such as the motion of atoms in the process of chemical reactions, and the transient state that occurs when ultra-short laser pulses act on materials Non-linear processes, etc., are the goa...
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IPC IPC(8): G01J11/00
CPCG01J11/00
Inventor 李景镇蔡懿陆小微张秀文刘进元吴庆阳惠彬牛丽红曾选科陈红艺
Owner SHENZHEN UNIV