Chirped-pulse terahertz spectroscopy for broadband trace gas sensing

被引：83
作者：
Gerecht, Eyal [1 ]
Douglass, Kevin O. [1 ]
Plusquellic, David F. [1 ]
机构：
[1] NIST, Gaithersburg, MD 20899 USA
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 09期
基金：
美国国家航空航天局;
关键词：
WATER-VAPOR CONTINUUM; CHEMICAL-ANALYSIS; THZ; REGION; DATABASE;
D O I：
10.1364/OE.19.008973
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the first demonstration of a broadband trace gas sensor based on chirp-pulse terahertz spectroscopy. The advent of newly developed solid state sources and sensitive heterodyne detectors for the terahertz frequency range have made it possible to generate and detect precise arbitrary waveforms at THz frequencies with ultra-low phase noise. In order to maximize sensitivity, the sample gas is first polarized using sub-mu s chirped THz pulses and the free inductive decays (FIDs) are then detected using a heterodyne receiver. This approach allows for a rapid broadband multi-component sensing with low parts in 10(9) (ppb) sensitivities and spectral frequency accuracy of <20 kHz in real-time. Such a system can be configured into a portable, easy to use, and relatively inexpensive sensing platform. (C) 2011 Optical Society of America
引用
收藏
页码：8973 / 8984
页数：12
相关论文
共 16 条
  • [1] Mid-infrared Fourier transform spectroscopy with a broadband frequency comb
    Adler, Florian
    Maslowski, Piotr
    Foltynowicz, Aleksandra
    Cossel, Kevin C.
    Briles, Travis C.
    Hartl, Ingmar
    Ye, Jun
    [J]. OPTICS EXPRESS, 2010, 18 (21): : 21861 - 21872
  • [2] Multiple component analysis of cigarette smoke using THz spectroscopy, comparison with standard chemical analytical methods
    Bigourd, D.
    Cuisset, A.
    Hindle, F.
    Matton, S.
    Bocquet, R.
    Mouret, G.
    Cazier, F.
    Dewaele, D.
    Nouali, H.
    [J]. APPLIED PHYSICS B-LASERS AND OPTICS, 2007, 86 (04): : 579 - 586
  • [3] Measuring picosecond isomerization kinetics via broadband microwave spectroscopy
    Dian, Brian C.
    Brown, Gordon G.
    Douglass, Kevin O.
    Pate, Brooks H.
    [J]. SCIENCE, 2008, 320 (5878) : 924 - 928
  • [4] A passive heterodyne, hot electron bolometer imager operating at 850 GHz
    Gerecht, Eyal
    Gu, Dazhen
    You, Lixing
    Yngvesson, K. Sigfrid
    [J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2008, 56 (05) : 1083 - 1091
  • [5] Chemical analysis in the submillimetre spectral region with a compact solid state system
    Medvedev, Ivan R.
    Behnke, Markus
    De Lucia, Frank C.
    [J]. ANALYST, 2006, 131 (12) : 1299 - 1307
  • [6] Submillimeter spectroscopy for chemical analysis with absolute specificity
    Medvedev, Ivan R.
    Neese, Christopher F.
    Plummer, Grant M.
    De Lucia, Frank C.
    [J]. OPTICS LETTERS, 2010, 35 (10) : 1533 - 1535
  • [7] The Cologne Database for Molecular Spectroscopy, CDMS:: a useful tool for astronomers and spectroscopists
    Müller, HSP
    Schlöder, F
    Stutzki, J
    Winnewisser, G
    [J]. JOURNAL OF MOLECULAR STRUCTURE, 2005, 742 (1-3) : 215 - 227
  • [8] A LONG PATH GAS ABSORPTION CELL
    PILSTON, RG
    WHITE, JU
    [J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1954, 44 (07) : 572 - 573
  • [9] Continuum and magnetic dipole absorption of the water vapor-oxygen mixtures from 0.3 to 3.6 THz
    Podobedov, V. B.
    Plusquellic, D. F.
    Siegrist, K. M.
    Fraser, G. T.
    Ma, Q.
    Tipping, R. H.
    [J]. JOURNAL OF MOLECULAR SPECTROSCOPY, 2008, 251 (1-2) : 203 - 209
  • [10] New measurements of the water vapor continuum in the region from 0.3 to 2.7 THz
    Podobedov, V. B.
    Plusquellic, D. F.
    Siegrist, K. E.
    Fraser, G. T.
    Ma, Q.
    Tipping, R. H.
    [J]. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 2008, 109 (03) : 458 - 467
12