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- W2020118384 abstract "We use finite difference time domain (FDFD) method as rigorous vector analysis model to simulate the focusing process of diffractive microlens (DML). Differing with most analysis model which the near field distributions are calculated by FDTD and then far field are obtained by using of propagation method, we obtain the fields in whole computational space by using of FDTD only. The advantages are that all the results are vector based and the computational time is saved greatly. In this paper, we present two methods to obtain wave amplitude, one is comparison method, and the other is integral method. Depending on wave amplitude in the whole computational space, one can conveniently obtain distributions of electric field intensity and calculate the time-average Poynting vector. We also present the formulation for calculating diffractive efficiency of DML based on time-average Poynting vector which denotes energy flow. As demonstration, a DML is analyzed by using of these algorithms. The time depended graphic results of FDTD show the process of wave propagation. The distribution of electric field intensity illustrates the focusing of the normal incident light. The focus pattern in the focal plane is also show. The diffractive efficiency of the DML is calculated by using of the energy flow method in this paper. The results show the high accuracy and efficiency of the model." @default.
- W2020118384 created "2016-06-24" @default.
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- W2020118384 date "2009-11-04" @default.
- W2020118384 modified "2023-09-23" @default.
- W2020118384 title "Rigorous vector analysis of diffractive microlens by using the finite-difference time-domain method" @default.
- W2020118384 doi "https://doi.org/10.1117/12.837849" @default.
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