Optical device with adjustable surface electric field distribution and adjusting method thereof
An optical device and surface electric field technology, applied in optical components, optics, instruments, etc., can solve the problem of non-adjustable surface electric field distribution, and achieve the effect of simple and convenient preparation process and adjustment method, simple and fast preparation process, and saving manpower and material resources.
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Embodiment 1
[0039] Such as figure 1 and figure 2 As shown, the embodiment of the present application provides an optical device with adjustable surface electric field distribution, the optical device includes a base layer and a single-layer planar structure, and a simple planar structure, compared with the preparation of double-layer and multi-layer chiral structures It is relatively easy, the preparation process is simple and fast, and saves manpower and material resources. In the later use, only hydrogen absorption and dehydrogenation are required to realize the adjustment of the electric field distribution on the surface of the structure. The preparation process and adjustment method are simple and convenient, and easy to operate.
[0040] The single-layer planar structure is formed by connecting a plurality of nano-period units with the same structure in a rectangular periodic array plane, and each period unit includes a structural unit. Each structural unit is composed of a first r...
Embodiment 2
[0046] Based on the structure of Embodiment 1, this embodiment discloses a method for adjusting an optical device with adjustable surface electric field distribution, including the following steps:
[0047] Step 1, at room temperature, place the optical device in a closed device filled with hydrogen, put the catalyst palladium, and let it stand for more than 30 minutes, the metal Mg of the first rod 1 will undergo a hydrogenation reaction with hydrogen to generate MgH 2 , which is equivalent to the medium, the material of the first rod 1 of the optical device changes, and its transmission characteristics also change accordingly;
[0048] Step 2, at room temperature, place the hydrogenated optics in an oxygen environment, MgH 2 Oxidative dehydrogenation reaction occurs, the MgH of the first rod 1 2 Restored to metal Mg, the transmission characteristics of the optical device are restored to the original;
[0049] Through the conversion of the above step 1 and step 2, the adjustm...
Embodiment 3
[0059] Based on the optical device disclosed in Example 1, a simulation calculation simulation experiment was performed by using the three-dimensional finite element method (FEM) calculation software COMSOLMultiphysics. The specific setting parameters are as follows:
[0060] The first rod body 1, the second rod body 2 and the third rod body 3 are all cuboids, and the size of the first rod body 1 is: length 120 nm×width 40 nm×thickness 40 nm; the second rod body 2 and the third rod body 3 Dimensions are: length 110 nm x width 40 nm x thickness 40 nm; first distance g = 25 nm; second distance d = 40 nm. Simulation results such as image 3 Shown is the transmission curve before and after transformation of the material properties of the first rod 1 of the optical device with adjustable surface electric field distribution in this embodiment.
[0061] From image 3 It can be seen from the x Under the irradiation of polarized light, especially in the range of 400-850nm, the tran...
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