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Journal Article
Tunable continuous-wave terahertz generation/detection with compact 155 μm detuned dual-mode laser diode and InGaAs based photomixer
- Authors
- Namje Kim, Sang-Pil Han, Hyunsung Ko, Young Ahn Leem, Han-Cheol Ryu, Chul Wook Lee, Donghun Lee, Min Yong Jeon, Sam Kyu Noh, Kyung Hyun Park
- Issue Date
- 2011-08
- Citation
- Optics Express, v.19, no.16, pp.15397-15403
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- Continuous-wave terahertz, Dual-mode laser, Fast Scanning, Fiber-coupled, Frequency tuning range, Laser diode, Log-spiral antenna, Optical beat source, THz Spectrometer, THz radiation, THz wave
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
