Figure 4 | Scientific Reports

Figure 4

From: High Throughput Laser Process of Transparent Conducting Surfaces for Terahertz Bandpass Ultrathin Metamaterials

Figure 4

(a) Time domain data collected for air reference, pure quartz substrate, quartz substrate coated with 8 nm-thick Cu film, laser patterned surface with laser beam diameter of 115 µm and hole spacing of 135 µm and laser patterned surface with laser beam diameter of 115 µm and hole spacing of 160 µm. There is notable oscillations in the waveform of the laser patterned Cu films; (b) THz transmission spectra for quartz and glass substrates without treatment and quartz and glass substrates coated with 8 nm-thick Cu film; (c) THz transmission spectra for laser patterned surface with laser beam diameter of 115 µm and hole spacing of 135 µm and laser patterned surface with laser beam diameter of 115 µm and hole spacing of 160 µm.

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