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Article
Second-harmonic wave patterns induced by the tightly focused radially polarized beam loaded with off-axis vortices
We investigated second-harmonic wave patterns induced by the tightly focused radially polarized beam loaded with off-axis vortices. The expression of the electric field of tightly focused radially polarized be...
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Article
Open AccessPerformance analysis of an adaptive optics system for free-space optics communication through atmospheric turbulence
The performance of free-space optics communication (FSOC) is greatly degraded by atmospheric turbulence. Adaptive optics (AO) is an effective method for attenuating the influence. In this paper, the influence ...
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Article
Open AccessHighly effective and chemically stable surface enhanced Raman scattering substrates with flower-like 3D Ag-Au hetero-nanostructures
We demonstrated flower-like 3D Ag-Au hetero-nanostructures on an indium tin oxide glass (ITO glass) for surface enhanced Raman scattering (SERS) applications. The flower-like 3D Ag nanostructures were obtained...
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Article
Open AccessHigh-accuracy wavefront sensing by phase diversity technique with bisymmetric defocuses diversity phase
We investigate a specific diversity phase for phase diversity (PD) phase retrieval, which possesses higher accuracy than common PD, especially for large-scale and high-frequency wavefront sensing. The commonly...
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Article
Open AccessVisible light high-resolution imaging system for large aperture telescope by liquid crystal adaptive optics with phase diversity technique
There are more than eight large aperture telescopes (larger than eight meters) equipped with adaptive optics system in the world until now. Due to the limitations such as the difficulties of increasing actuato...
