Terahertz Time-Domain Spectroscopy Based on Commercially Available 1550 nm Fabry-Perot Laser Diode and ErAs:In(Al)GaAs Photoconductors

被引：19

作者：

Tybussek, Kai-Henning ^{[1
,2
]}

Kolpatzeck, Kevin ^{[1
]}

Faridi, Fahd ^{[3
]}

Preu, Sascha ^{[3
]}

Balzer, Jan C. ^{[1
]}

机构：

[1] Univ Duisburg Essen, Chair Commun Syst NTS, D-47057 Duisburg, Germany

[2] French German Res Inst St Louis ISL, F-68301 St Louis, France

[3] Tech Univ Darmstadt, Dept Elect Engn & Informat Technol, Terahertz Devices & Syst, D-64283 Darmstadt, Germany

来源：

APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 13期

关键词：

THz time-domain spectroscopy; mode-locked laser diode; telecom technology; photoconductors; SECTION QUANTUM-DASH; PERFORMANCE; GENERATION; SYSTEM; DRIVEN; MODE; RADIATION; FOOD;

D O I：

10.3390/app9132704

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

THz time-domain spectroscopy (TDS) is a promising tool for quality control purposes in industrial applications, but the high cost and the relatively large laser sources still make it difficult to use the full potential of the technology for a decent price. In this work, a THz TDS system, which uses a commercially available Fabry-Perot laser diode emitting at 1550 nm, is presented. By dispersion compensation, pulses with a duration of 544 fs were generated, resulting in THz radiation with a bandwidth of 1.4 THz and a peak dynamic range of 56 dB with state-of-the-art ErAs:In(Al)GaAs photoconducting antennas. These results are compared with those of a conventional and expensive fiber laser system with a 90 fs pulse duration.

引用

页数：9