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학술지 Tunable Continuous-Wave Terahertz Generation/Detection with Compact 1.55 μm Detuned Dual-Mode Laser Diode and InGaAs Based Photomixer
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저자
김남제, 한상필, 고현성, 임영안, 류한철, 이철욱, 이동훈, 전민용, 노삼규, 박경현
발행일
201108
출처
Optics Express, v.19 no.16, pp.15397-15403
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.19.015397
초록
We demonstrate a tunable continuous-wave (CW) terahertz (THz) homodyne system with a novel detuned dual-mode laser diode (DML) and low-temperature- grown (LTG) InGaAs photomixers. The optical beat source with the detuned DML showed a beat frequency tuning range of 0.26 to over 1.07 THz. Log-spiral antenna integrated LTG InGaAs photomixers are used as THz wave generators and detectors. The CW THz radiation frequency was continuously tuned to over 1 THz. Our results clearly show the feasibility of a compact and fast scanning CW THz spectrometer consisting of a fiber-coupled detuned DML and photomixers operating in the 1.55-μm range. © 2011 Optical Society of America.
KSP 제안 키워드
Beat frequency, Continuous-wave terahertz, Dual-mode laser, Fast scanning, Fiber-coupled, Frequency tuning range, Laser diode(LD), Log-spiral antenna, Low temperature(LT), Optical beat source, THz Spectrometer