Fig. 3: THz characterisation.
From: Direct and integrating sampling in terahertz receivers from wafer-scalable InAs nanowires
a Comparison of raw data of THz responses obtained from a 5NW and a 1NW receiver under varying excitation wavelengths of 0.98 mJ/cm2 fluence, respectively. b Comparison of raw data of THz responses obtained from a 5NW (left) and a 1NW (right) receiver under varying excitation fluences. The 5NW is optically gated by a 1.2 μm-wavelength laser and the 1NW receiver is optically gated by a 1.55 μm-wavelength laser. c Comparison of raw data of THz responses obtained from 1NW receivers made of a 6.75-µm-long NW (identified as multi-faceted) and a 14-µm-long NW (identified as undeterminable-faceted). d Raw data of THz response obtained from a multi-faceted 1NW receiver and its corresponding THz spectral response as shown in (e). f Raw data of THz response from a single-faceted 5NW THz receiver and its recovered THz transient as shown in (g) by differentiation of data in (f), which was further converted into THz spectral response as shown in (h). Both receivers were optically gated by a 1.5-μm-wavelength laser under fluence of 0.98 mJ/cm2.
