Abstract
Ghost imaging is a research focus of image area with various advantages against traditional imagings. However, most of the existing works didn’t have a better resolution than the diffraction limit. In this work, we presented a ghost imaging system with plasmonic structure illumination microscopy (PSIM), to achieve super-resolution imaging. The resolution can reach 3 to 4 times of diffraction limit with surface plasmon polaritons (SPPs) and structure illumination microscopy (SIM) theory. In addition, imaging results are obtained accordingly. This method has great research value in medical fields such as micro-imaging and endoscope. Then, we used the gamma-gamma intensity-fluctuation model to simulate the ghost imaging system in atmospheric turbulence channel. By setting proper values of the parameters such as transmission distance and refractive-index structure parameter, the peak signal-to-noise ratio (PSNR) performance and symbol-error rate (SER) performance are obtained to evaluate the imaging quality, which provides a theoretical model to further research the ghost-imaging algorithm.
Highlights
Ghost imaging is a new quantum imaging technology that advances with the development of quantum technology
The finite difference time domain (FDTD) method is utilized to simulate the excitation of the surface plasmon polaritons (SPPs)
The diagram of the SPP excitation is shown in Figure 5: the simulation area is indicated by (A); the silver film with the thickness of 120 nm is indicated by (B); two slits etched on the silver film are indicated by (D); and the layer of Al2O3 with thickness of 50 nm is indicated by (C)
Summary
Ghost imaging is a new quantum imaging technology that advances with the development of quantum technology. Plasmonic structure illumination microscopy (PSIM) is a super-resolution imaging technology with great research value. As a combination of structure illumination microscopy (SIM) technology and dynamically controllable surface plasmon polaritons (SPPs) field, it can improve the resolution significantly.
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