Figure 1 | Scientific Reports

Figure 1

From: Surface enhancement of THz wave by coupling a subwavelength LiNbO3 slab waveguide with a composite antenna structure

Figure 1

Images of the designed metal antennas. (a) Image of the SBAs (square bottom antennas) deposited on the LN crystal surface by phase contrast imaging. (b) An magnified view of (a) by polarizing microscope imaging. The single arm length is l = 112 μm, the width is w = 10 μm and the gap is g = 5 μm. (c) The image of the TBAs (tip bottom antennas) deposited on the LN crystal surface by the phase contrast imaging. (d) Magnified view of (c) by the polarizing microscope imaging. The single arm length is l = 112 μm (containing the tip part), the width is w = 10 μm and the gap is g = 5 μm.

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