Open AccessCompact fiber-pigtailed InGaAs photoconductive antenna module for terahertz-wave generation and detection
Author(s) -
Shihui Han,
Namje Kim,
Hyunsung Ko,
Han-Cheol Ryu,
JeongWoo Park,
Young-Jong Yoon,
JunHwan Shin,
Dong Hun Lee,
Sang-Ho Park,
SeokHwan Moon,
SungWook Choi,
Hyang Sook Chun,
Kyung Hyun Park
Publication year - 2012
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.20.018432
Subject(s) - materials science , terahertz radiation , optoelectronics , antenna (radio) , photoconductivity , printed circuit board , optics , electrical engineering , physics , engineering
We propose a compact fiber-pigtailed InGaAs photoconductive antenna (FPP) module having an effective heat-dissipation solution as well as a module volume of less than 0.7 cc. The heat-dissipation of the FPP modules when using a heat-conductive printed circuit board (PCB) and an aluminium nitride (AlN) submount, without any cooling systems, improve by 40% and 85%, respectively, when compared with a photoconductive antenna chip on a conventional PCB. The AlN submount is superior to those previously reported as a heat-dissipation solution. Terahertz time-domain spectroscopy (THz-TDS) using the FPP module perfectly detects the absorption lines of water vapor in free space and an α-lactose sample.