Tunable continuous-wave terahertz generation/detection with compact 155 μm detuned dual-mode laser diode and InGaAs based photomixer | Zendy

Namje Kim | Zendy; Sang-Pil Han | Zendy; Hyunsung Ko | Zendy; Young Ahn Leem | Zendy; HanCheol Ryu | Zendy; Chul Wook Lee | Zendy; Donghun Lee | Zendy; Min Yong Jeon | Zendy; Sam Kyu Noh | Zendy; Kyung Hyun Park | Zendy

Open Access

Tunable continuous-wave terahertz generation/detection with compact 155 μm detuned dual-mode laser diode and InGaAs based photomixer

Author(s) -

Namje Kim,

Sang-Pil Han,

Hyunsung Ko,

Young Ahn Leem,

HanCheol Ryu,

Chul Wook Lee,

Donghun Lee,

Min Yong Jeon,

Sam Kyu Noh,

Kyung Hyun Park

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.015397

Subject(s) - terahertz radiation , optics , optoelectronics , continuous wave , laser , photomixing , diode , materials science , detector , physics , far infrared laser , terahertz metamaterials

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.

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