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학술지 Frequency Modulation Based Continuous-Wave Terahertz Homodyne System
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저자
이일민, 김남제, 이의수, 한상필, 문기원, 박경현
발행일
201501
출처
Optics Express, v.23 no.2, pp.846-858
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.23.000846
협약과제
14PE1100, 테라헤르츠 영상?분광 복합 포터블 스캐너 기술 개발 , 박경현
초록
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.
KSP 제안 키워드
Continuous-wave terahertz, Dual-mode laser, Frequency modulation, Frequency-Modulated Continuous Wave(FMCW), Operation scheme, THz applications, THz measurement, THz system, THz waves, Tuning characteristics, continuous wave(CW)