Interferometric Time Synchronization of a Terahertz Time-Domain Spectroscopy System Driven by a Mode-Locked Laser Diode

2021 ◽  
Author(s):  
Kevin Kolpatzeck ◽  
Peter Kramer ◽  
Xuan Liu ◽  
Tobias Kubiczek ◽  
Jan C. Balzer ◽  
...  
Keyword(s):  
Laser Diode ◽  
Time Domain ◽  
Time Synchronization ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Spectroscopy System ◽  
Mode Locked Laser

Analysis on the characteristics of animal tissues based on the Terahertz time domain spectroscopy system

2012 ◽  
Vol 10 (s1) ◽  
pp. S13201-313204
Author(s):  
Chengzhen Lu Chengzhen Lu ◽  
Chen Liu Chen Liu ◽  
Erliang Cui Erliang Cui ◽  
Jia Li Jia Li ◽  
Wei Liu Wei Liu ◽  
...  
Keyword(s):  
Time Domain ◽  
Animal Tissues ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Spectroscopy System

Research Progress of Rapid Scan Terahertz Time Domain Spectroscopy System

2011 ◽  
Vol 48 (12) ◽  
pp. 123001
Author(s):  
刘文权 Liu Wenquan ◽  
鲁远甫 Lu Yuanfu ◽  
冯广智 Feng Guangzhi ◽  
龚小竞 Gong Xiaojing ◽  
杨珺 Yang Jun ◽  
...  
Keyword(s):  
Time Domain ◽  
Research Progress ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Rapid Scan ◽  
Spectroscopy System

Investigation of aging characteristics in explosive using terahertz time-domain spectroscopy

2019 ◽  
Vol 33 (24) ◽  
pp. 1950272 ◽  
Author(s):  
Wei Shi ◽  
Chengang Dong ◽  
Lei Hou ◽  
Zhiyang Xing ◽  
Qian Sun ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Fourier Transform ◽  
Absorption Spectra ◽  
Time Domain ◽  
Detection System ◽  
Coherent Detection ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Terahertz Absorption ◽  
Spectroscopy System

The terahertz absorption spectrum of the five aging explosive samples (PETN, RDX, HMX, LLM-105 and TATB) was measured and calculated by Terahertz time-domain spectroscopy system (THz-TDS) and air-biased coherent detection system (ZAP-ABCD), respectively. In this paper, compared with the unaging explosive, each aging explosive sample’s terahertz time-domain spectra were obtained and the terahertz absorption spectra were calculated by using Fourier transform and Lambert’s law. The results show that there are several terahertz absorption peaks which were called “fingerprint spectra” for different aging explosive samples in the range of 0.3–6.0 THz spectrum. Meanwhile, the results also show that the locations of the characteristic absorption peaks are not the same. Moreover, the unaging and aging explosive samples have obviously different terahertz absorption spectra.

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

2019 ◽  
Vol 9 (13) ◽  
pp. 2704 ◽  
Author(s):  
Kai-Henning Tybussek ◽  
Kevin Kolpatzeck ◽  
Fahd Faridi ◽  
Sascha Preu ◽  
Jan C. Balzer
Keyword(s):  
Laser Diode ◽  
Time Domain ◽  
Dynamic Range ◽  
Laser System ◽  
Industrial Applications ◽  
Thz Radiation ◽  
Full Potential ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Fabry Perot

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.

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