Dual-optical-frequency-comb linear spectral encoding imaging method
A dual optical frequency comb and optical frequency comb technology, applied in the field of ultrafast optics, can solve problems such as difficult to achieve rapid image measurement and rapid extraction of various information, and achieve the effects of easy system installation and deployment, simple detection, and improved imaging speed
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[0038] Example 1
[0039] Refer to figure 2 , The repetition frequency of the signal light source optical frequency comb 101 and the local oscillator light source optical frequency comb 102 are simultaneously locked with the external atomic clock 103; the signal light generated by the optical frequency comb 101 is divided into the reference light and the probe light by the polarization beam splitter 401; the reference light passes through The quarter wave plate 201 and the reflecting mirror 201 pass through the quarter wave plate 201 again, and pass through the polarization beam splitter 401 to combine with the detection light. The probe light passes through the quarter wave plate 301 and enters the spectrally encoded imager. The spectrally encoded imager is composed of a transmission grating 302 and a microscope objective lens 303. The spectrum is spatially expanded by the transmission grating 302 and focused on the sample 304 to be tested through the microscope objective lens...
Example Embodiment
[0044] Example 2
[0045] Refer to image 3 , The repetition frequency of the signal light source optical frequency comb 101 and the local oscillator light source optical frequency comb 102 are simultaneously locked with the external atomic clock 103; the signal light generated by the optical frequency comb 101 is divided into the reference light and the probe light by the polarization beam splitter 401; the reference light passes through The quarter wave plate 201 and the reflecting mirror 201 pass through the quarter wave plate 201 again, and pass through the polarization beam splitter 401 to combine with the detection light. The probe light passes through the quarter wave plate 301 and enters the spectrally encoded imager. The spectrally encoded imager is composed of a prism 305 and a microscope objective lens 303. The spectrum is spatially expanded by the prism 305 and focused on the sample 304 to be tested through the microscope objective lens 303. The light transmitted th...
Example Embodiment
[0050] Example 3
[0051] Refer to Figure 4 , The repetition frequency of the signal light source optical frequency comb 101 and the local oscillator light source optical frequency comb 102 are simultaneously locked with the external atomic clock 103; the signal light of the optical frequency comb 101 and the local oscillator light of the optical frequency comb 102 are injected into the beam combiner 502 at the same time. After passing through the beam combiner 502, it is divided into the detection light and the reference light, and the two beams simultaneously contain the signal light of the optical frequency comb 101 and the local oscillation light of the optical frequency comb 102. The reference light passes through the compensation fiber so that the optical path of the reference light is approximately equal to the optical path of the probe light. The reference light enters the photodetector 605 directly. The probe light passes through the fiber loop mirror 308 and the coll...
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