A single-pixel high-speed super-resolution imaging device and method based on time-domain stretching

Abstract

The invention provides a single-pixel high-speed super-resolution imaging device and a method based on a time domain stretching. The device includes: a femtosecond pulse laser, a coupler, a first photoelectric detector, an arbitrary waveform generator, a doped fiber amplifier, a single mode fiber, a photoelectric modulator, a first collimator, a first cylindrical lens, a first virtual imaging phase array, a first diffraction grating, a first plano-convex lens, a second plano-convex lens, a first microscope objective, an observation object, a second microscope objective, a third plano-convex lens, a fourth plano-convex lens, a second diffraction grating, a second virtual imaging phase array, a second cylindrical lens, a second collimator, a second photoelectric detector, a high-speed oscilloscope, and a data processing unit. The method produces a predefined two-dimensional structure illumination pattern by a spectral coding and a specific spatial position design of an optical element realized by the time domain stretching technology, and realizes a acquisition of continuous images by the single pixel detection and data processing unit of the photoelectric detector.

Description

technical field [0001] The invention belongs to the field of high-speed super-resolution imaging, and in particular relates to a single-pixel high-speed super-resolution imaging device and method based on time-domain stretching. Background technique [0002] Imaging technology is one of the important tools for humans to understand and transform nature, and it has been widely used in many fields. Research on imaging devices and methods with high spatial and high temporal resolution has always been one of the goals pursued by people, but most of the current imaging technologies discuss how to improve the spatial resolution or temporal resolution in the imaging process separately, but fail to simultaneously The two are improved, and the existing high-speed super-resolution devices and methods cannot achieve long-term continuous observation (Xu Shixiang, Chen Wenting, Zeng Xuanke, et al. A real-time high-spatial resolution ultrafast framing optical imaging device). However, for...

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Problems solved by technology

[0005] Aiming at the problem that most of the existing imaging technologies only improve the time resolution or spatial resolution in one aspect, but fail to improve both at the same time, the present invention proposes a single-pixel high-speed super The resolution imaging device and method have the performance of high spatial and high temporal resolution, and can meet the requirements of long-term continuous observation, so as to realize continuous observation of instantaneous and non-repetitive events, and obtain high-quality images

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