Zhao Guozhong, Savini Giorgio, Yu Yang, Li Shuai, Zhang Jin, Ade Peter
Beijing Advanced Innovation Center for Imaging Theory and Technology, Capital Normal University, Beijing, China.
Department of Physics, Capital Normal University, Beijing, China.
Sci Rep. 2019 Feb 14;9(1):2099. doi: 10.1038/s41598-019-39322-y.
We describe the design, build and characterization of a novel two-output port configuration for a THz-Time Domain Spectroscopy (TDS) system. By introducing a tilted THz ultra-broadband polarizer, we split the THz beam in two orthogonal polarization detector branches. The probe laser is similarly split (with an optical polarizer) replicating the detection chain to obtain two independent orthogonal polarization detection units. We describe the system's performance highlighting some of the advantages of this system in one of its two modes of operation: optimized polarimetry for Jones matrix measurements. A bi-refringent sapphire standard was measured to confirm its capabilities and assess the performance of the system showing good agreement with existing literature data.
