Three-plate group detection system of silver-doped defect negative refraction photonic crystal
A photonic crystal and detection system technology, applied in the optical field, can solve the problems of small refocusing resolution and small longitudinal detection distance, and achieve the effects of improving refocusing resolution, amplifying strong stimulated radiation, and improving transmittance
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[0014] see figure 1 , the entire detection system of the present invention is composed of a light source 4, a detector 5 and three parallel NR-PC (equivalent negative refraction photonic crystal) flat lenses doped with silver defect impurities on the upper, middle and lower sides. The three flat lenses form a photon Crystal triple plate lens group. The three flat lenses are separated by air, and the air separation distance between two adjacent flat lenses is the same, both being d. Among them, the arrangement structure of silver defects in the upper and lower plate lenses A and C is the same, and the structure of the middle plate lens B between the upper and lower plate lenses A and C is slightly different. by figure 1 The structure is a periodic unit, and the photonic crystal three-plate lens group is arbitrarily extended to the left and right in the x direction (length direction) to form a detection and imaging system. The target diameter of detection target 3 is D =1 / 6 ...
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