상세정보
학술지
Optical Fiber-Coupled InGaAs-Based Terahertz Time-Domain Spectroscopy System
- 발행일
- 201108
- 출처
- Optics Letters, v.36 no.16, pp.3094-3096
- ISSN
- 0146-9592
- 출판사
- Optical Society of America(OSA)
- 초록
- The successful demonstration of an optical fiber-coupled terahertz time-domain spectroscopy (THz-TDS) system is described in this study. The terahertz output power of the emitter with two optical band rejection filters was 132nW, which is an improvement of 70% over the output power without any filters. This improvement is due to the suppression of an optical modulated signal that is reverse-generated when an alternating current bias exceeding a certain threshold is applied to the emitter. Under the optimal alignment conditions, the terahertz detector in a fiber-coupled THz-TDS system clearly measured water vapor dips in the free space. © 2011 Optical Society of America.
- KSP 제안 키워드
- Band rejection filters, Fiber-coupled, Free Space, Modulated signal, Optical band, Output power, Terahertz detector, Time-domain spectroscopy system, Water vapor, alternating current(AC), an optical fiber