Figure 2
From: Propagation of terahertz waves in a monoclinic crystal BaGa4Se7
Schematic illustration of the polarization sensitive THz-TDS system. Laboratory frames are denoted by (X, Y, Z). THz polarizer P1 and P3 are fixed and have the same setting for transmitting X-polarized THz field. P2 is set to θP = ±45° to acquire two orthogonal components of the field. Note that the angle is positive (negative) if it is measured from X-axis counterclockwise (clockwise). The azimuth orientation of the crystal (BaGa4Se7) is described by the angle θc.
