Exploration of the origin of random error in spectrum intensity measured with THz-TDS

Takeda, M.; Tripathi, Saroj R.; Aoki, Makoto; Hiromoto, Norihisa

doi:10.1109/icimw.2010.5612455

Cited by 7 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laser amplitude fluctuations, beam pointing deflections, and detector noise were all considered as possible noise sources, but were found to be too small to account for the observed noise levels. A similar study was carried out by Takeda et al [14], also with inconclusive results. For example, Fig.…”

Section: Noise and Uncertaintiesmentioning

confidence: 62%

Metrology Issues and Solutions in THz Time-Domain Spectroscopy: Noise, Errors, Calibration

Naftaly

2013

IEEE Sensors J.

View full text Add to dashboard Cite

This paper reviews metrology aspects of terahertz time-domain spectroscopy. Noise is discussed together with its effects on system performance, including frequency-dependent dynamic range, signal-to noise ratio, and the measurement bandwidth. Sources of uncertainties are addressed, as are measurement errors arising from system design and from interactions with the object under test. Finally, techniques of system calibration are described. Commonly encountered issues are addressed and simple practical solutions suggested. Existing literature on the subject is reviewed.Index Terms-Metrology, THz spectroscopy, time-domain spectroscopy (TDS).

show abstract

Section: Noise and Uncertaintiesmentioning

confidence: 62%

Metrology Issues and Solutions in THz Time-Domain Spectroscopy: Noise, Errors, Calibration

Naftaly

2013

IEEE Sensors J.

View full text Add to dashboard Cite

show abstract

“…This was seen to be the case by Hübers et al [42] who have tested different TDS systems, incidentally confirming that amplitude noise is proportional to the absolute value of amplitude. Laser amplitude fluctuations, beam pointing deflections, and detector noise were all considered as possible noise sources, but were found to be too small to account for the observed noise levels [42,46,47]. Moreover, it was seen that the random errors in amplitude and phase spectra of a TDS are independent of each other, and therefore are unlikely to be attributable to a common cause.…”

Section: Thz Tds Operational Specificationsmentioning

confidence: 99%

Metrology State-of-the-Art and Challenges in Broadband Phase-Sensitive Terahertz Measurements

et al. 2017

View full text Add to dashboard Cite

The two main modalities for making broadband phase-sensitive measurements at terahertz frequencies are Vector Network Analyzers (VNA) and Time Domain Spectrometers (TDS). These measuring instruments have separate and fundamentally different operating principles and methodologies, and they serve very different application spaces. The different architectures give rise to different measurement challenges and metrological solutions. This article reviews these two measurement techniques and discusses the different issues involved in making measurements using these systems. Calibration, verification and measurement traceability issues are reviewed, along with other major challenges facing these instrument architectures in the years to come. The differences in, and similarities between, the two measurement methods are discussed and analysed. Finally, the operating principles of ElectroOptic Sampling (EOS) are briefly discussed. This technique has some similarities to TDS and shares application space with the VNA.

show abstract

A narrow linewidth terahertz dual-comb spectrometer with an all-fiber adaptive clock and a real-time feedback loop

Xia

Liu

et al. 2023

Optics & Laser Technology

View full text Add to dashboard Cite

Exploration of the origin of random error in spectrum intensity measured with THz-TDS

Cited by 7 publications

References 7 publications

Metrology Issues and Solutions in THz Time-Domain Spectroscopy: Noise, Errors, Calibration

Metrology Issues and Solutions in THz Time-Domain Spectroscopy: Noise, Errors, Calibration

Metrology State-of-the-Art and Challenges in Broadband Phase-Sensitive Terahertz Measurements

A narrow linewidth terahertz dual-comb spectrometer with an all-fiber adaptive clock and a real-time feedback loop

Contact Info

Product

Resources

About