Abstract
The electro-optical sampling method is a widely used technique for the detection of terahertz (THz) waves. During the last thirty years, various electro-optical sensors have been proposed, but mainly working with a near-infrared probe. Here we demonstrate efficient detection of terahertz radiation up to 2.5 THz using a (110)-cut zinc sulfide (ZnS) crystals with the second harmonic of an amplified solid-state ytterbium laser beam at 512 nm. To validate its characteristics, we compare its performance with that of the cadmium telluride (CdTe) crystal probed at the fundamental wavelength of the laser.
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