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- W1999446044 abstract "The discreteness of driving electrodes in liquid crystal optical phased array (LCOPA) device causes phase valley in the region between two adjacent electrodes. When a one-dimensional transmission-type LCOPA device was used, there was a pair of diffraction sidelobes with considerable intensity on either side of the deflected beam, which decreased the diffraction efficiency of deflected beam greatly. An analytical numerical model of phase valley was proposed for the quantitative analytic analysis on diffraction efficiency. Results showed that phase valley is the cause for diffraction sidelobes. The diffraction efficiency of deflected beam decreases steeply as the phase valley depth increases. When valley depth decreases close to zero, the main factor having affect on diffraction efficiency turns to be flyback region size. The influence of electrode space on diffraction efficiency was quantitatively analyzed as well. An effective way to reduce or even eliminate the phase valley is to reduce the space between electrodes." @default.
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- W1999446044 date "2008-10-02" @default.
- W1999446044 modified "2023-10-17" @default.
- W1999446044 title "Effect of phase valley on diffraction efficiency of liquid crystal optical phased array" @default.
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- W1999446044 doi "https://doi.org/10.1117/12.821247" @default.
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