title: Frequency modulation based continuous-wave terahertz homodyne system.
abstract: In this study, inspired by the frequency-modulated continuous-wave (FMCW) method, an operation scheme of continuous-wave (CW) terahertz (THz) homodyne system is proposed and evaluated. For this purpose, we utilized the fast and stable wavelength tuning characteristics of a dual-mode laser (DML) as a beating source. Using the frequency-modulated THz waves generated by DML, a cost-effective and robust operation of CW THz system to be applicable to the measurements of thickness or refractive index of a sample is demonstrated. We believe that the proposed scheme shows a potential to the implementations of compact and fast CW THz measurement systems that can be useful in many THz applications.
authors.forename: Il-Min
authors.initials: IM
authors.lastname: Lee
authors.forename: Namje
authors.initials: N
authors.lastname: Kim
authors.forename: Eui Su
authors.initials: ES
authors.lastname: Lee
authors.forename: Sang-Pil
authors.initials: SP
authors.lastname: Han
authors.forename: Kiwon
authors.initials: K
authors.lastname: Moon
authors.forename: Kyung Hyun
authors.initials: KH
authors.lastname: Park