Sweep frequency optical coherent imaging system based on optical calculation

An optical coherent imaging and optical computing technology, applied in the field of biomedical photonics, can solve the problems of difficulty in realizing high-resolution three-dimensional real-time imaging, large size, etc., and achieve the effect of improving the imaging speed of the system, the imaging speed is fast, and the work is stable.
CN104706322AActive Publication Date: 2015-06-17TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2015-06-17

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Abstract

The invention relates to a sweep frequency optical coherent imaging system based on optical calculation. The system is characterized by comprising a sweep frequency interference system and an optical calculation system; the sweep frequency interference system comprises a pulse laser, a sweep frequency optical device, an OCT interferometer and a photoelectric detector; the optical calculation system comprises a radio frequency amplifier, an optical intensity modulator, a broadband light source, a dispersion device, a Mach-Zehnder interferometer, a balance detector, an envelope detector, a data acquisition card and a computer. Real-time Fourier transformation of optical frequency domain signals is achieved, due to the fact that Fourier transformation can process image data of the sweep frequency optical coherent imaging system in time, the imaging speed of the system is extremely high, and the system can be widely applied to sweep frequency optical coherent imaging.
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Description

technical field

[0001] The invention relates to a swept source optical coherence imaging system (SS-OCT for short), in particular to a swept optical coherence imaging system based on optical calculation, which belongs to the field of biomedical photonics. Background technique

[0002] At present, Optical Coherence Tomography (OCT) has been developed from traditional Time Domain-OCT (TD-OCT) to Frequency Domain Optical Coherence Tomography (Fourier Domain-OCT). FD-OCT). Among them, there are two types of FD-OCT: Spectral Optical Coherence Tomography (Spectral Domain-OCT, referred to as SD-OCT) based on CCD (Charge-coupled Device) spectrometer detection and frequency-sweeping optical coherence layer based on frequency-sweeping lasers Analysis (Swept Source-OCT, SS-OCT for short). Compared with other types of OCT, SS-OCT has both the fast imaging capability of spectral SD-OCT and the point detection advantages of time-domain OCT.

[0003] In the existing SS-OCT, what the det...

Claims

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