Femtosecond differential optical Kerr gate and imaging device and method based on optical Kerr gate
A differential light, femtosecond technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of increasing the imaging signal-to-noise ratio, affecting the imaging contrast, unable to achieve single-pulse imaging, etc., and achieves sharp edges and high time resolution. , the effect of high system resolution
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, which are explanations rather than limitations of the present invention.
[0038] Although the femtosecond heterodyne optical Kerr-gate gated imaging technology proposed by the applicant (patent application number: 201310471560.0) has improved the imaging resolution under the condition of non-scattering medium, it is not effective in the actual condition of strong scattering medium. In imaging applications, part of the scattered light is introduced as the background of imaging. This background noise increases the imaging signal-to-noise ratio, reduces the imaging contrast, and even makes it impossible to achieve single-pulse imaging. And the present invention is the further improvement to femtosecond heterodyne optical Kerr gate, the femtosecond differential optical Kerr gate gating single-pulse imaging technique that the present inventi...
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