Part-per-million gas detection from long-baseline THz spectroscopy

被引：58

作者：

Harmon, SA ^{[1
]}

Cheville, RA ^{[1
]}

机构：

[1] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1788896

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a long-baseline THz time domain spectrometer based on a White cell design capable of detecting gas species in the low part-per-million range in near real time. Coherent transients from methyl chloride vapor are observed directly in the time domain using a 5.0 m path length at pressures down to 1 Pa. Both phase sensitive (lock-in) detection and direct signal averaging using a rapid-scanning delay line are used for data acquisition. (C) 2004 American Institute of Physics.

引用

页码：2128 / 2130

页数：3

共 11 条

[1]

[Anonymous], MILLIMETER WAVE OPTI

[2]

FRENKEL L, 1996, J CHEM PHYS, V44, P2610

[3] FAR-INFRARED TIME-DOMAIN SPECTROSCOPY WITH TERAHERTZ BEAMS OF DIELECTRICS AND SEMICONDUCTORS [J].

GRISCHKOWSKY, D ;

KEIDING, S ;

VANEXTER, M ;

FATTINGER, C .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1990, 7 (10) :2006-2015

[4] THZ COMMENSURATE ECHOES - PERIODIC REPHASING OF MOLECULAR-TRANSITIONS IN FREE-INDUCTION DECAY [J].

HARDE, H ;

KEIDING, S ;

GRISCHKOWSKY, D .

PHYSICAL REVIEW LETTERS, 1991, 66 (14) :1834-1837

[5] Terahertz studies of collision-broadened rotational lines [J].

Harde, H ;

Cheville, RA ;

Grischkowsky, D .

JOURNAL OF PHYSICAL CHEMISTRY A, 1997, 101 (20) :3646-3660

[6] Chemical recognition of gases and gas mixtures with terahertz waves [J].

Jacobsen, RH ;

Mittleman, DM ;

Nuss, MC .

OPTICS LETTERS, 1996, 21 (24) :2011-2013

[7] Far-infrared dielectric properties of polar liquids probed by femtosecond terahertz pulse spectroscopy [J].

Kindt, JT ;

Schmuttenmaer, CA .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (24) :10373-10379

[8] Gas filter correlation instrument for air monitoring at submillimeter wavelengths [J].

Mouret, G ;

Chen, W ;

Boucher, D ;

Bocquet, R ;

Mounaix, P ;

Lippens, D .

OPTICS LETTERS, 1999, 24 (05) :351-353

[9] Terahertz beam propagation measured through three-dimensional amplitude profile determination [J].

Reiten, MT ;

Harmon, SA ;

Cheville, RA .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2003, 20 (10) :2215-2225

[10]

Townes C. H., 2013, Microwave Spectroscopy

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