Terahertz quasi time-domain spectroscopy based on telecom technology for 1550 nm

We present a fiber-coupled terahertz quasi time-domain spectroscopy system driven by a laser with a central wavelength of 1550 nm. By using a commercially available multimode laser diode in combination with state-of-the-art continuous wave antennas, a bandwidth of more than 1.8 THz is achieved. The...

Full description

Saved in:
Bibliographic Details
Published inOptics express Vol. 25; no. 11; p. 12851
Main Authors Kohlhaas, Robert B., Rehn, Arno, Nellen, Simon, Koch, Martin, Schell, Martin, Dietz, Roman J. B., Balzer, Jan C.
Format Journal Article
LanguageEnglish
Published United States 29.05.2017
Online AccessGet full text

Cover

More Information
Summary:We present a fiber-coupled terahertz quasi time-domain spectroscopy system driven by a laser with a central wavelength of 1550 nm. By using a commercially available multimode laser diode in combination with state-of-the-art continuous wave antennas, a bandwidth of more than 1.8 THz is achieved. The peak signal-to-noise ratio is around 60 dB. A simulation based on the optical spectrum of the laser diode and the transfer function of the THz path is in agreement with the experimental results. The system is used to extract the refractive index from two different samples and the results indicate that the performance is up to 1.8 THz comparable to a terahertz time-domain spectroscopy system.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.25.012851