Terahertz (THz) radiation generated from photoconductive antenna fabricated on a single crystal zinc oxide (ZnO) is presented. The THz-radiation power is saturated at bias voltages above 800V∕cm and the obtained spectrum extends up to 1 THz. Moreover, ZnO is found to be highly transparent in the visible, near-infrared, mid-infrared and THz frequency regions. The results depicted here will categorically unravel the prospects of using ZnO as a material for integrated active optics.
We report on terahertz (THz)-radiation generation from a photoconductive antenna fabricated on a zinc oxide (ZnO) thin film. This ZnO thin film was epitaxially grown on a sapphire single crystal by rf-planar magnetron sputtering. The THz-radiation power from the ZnO thin film did not saturate below 14-kV/cm-biased electric field.
Terahertz pulses generated from photoconductive switch fabricated on zinc oxide (ZnO) single crystal is presented. High transparent nature of ZnO in visible, near-infrared, midinfrared and terahertz regions will pave the way for integrated active optics.
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