Real-time measurements of trace gases using a compact difference-frequency-based sensor operating at 3.5 μm

被引：43

作者：

Lancaster, DG ^{[1
]}

Richter, D ^{[1
]}

Curl, RF ^{[1
]}

Tittel, FK ^{[1
]}

机构：

[1] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 67卷 / 03期

关键词：

D O I：

10.1007/s003400050513

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The use of a compact gas sensor based on cw difference-frequency generation in periodically poled LiNbO3 for on-line absorption measurements of H2CO, CH4, and H2O near 3.5 mu m is reported. Formaldehyde levels of 30 ppb, corresponding to absorptions of 2 x 10(-4) have been measured using absorption spectroscopy. In this paper we report specifically the performance of this sensor as part of the 1997 Lunar-Mars Life Support Test program at the NASA Johnson Space Center.

引用

页码：339 / 345

页数：7

共 16 条

[1] FREQUENCY-MODULATION AND WAVELENGTH MODULATION SPECTROSCOPIES - COMPARISON OF EXPERIMENTAL METHODS USING A LEAD-SALT DIODE-LASER
BOMSE, DS
STANTON, AC
SILVER, JA
[J]. APPLIED OPTICS, 1992, 31 (06): : 718 - 731
[2] WAVENUMBERS, LINE STRENGTHS, AND ASSIGNMENTS IN THE DOPPLER-LIMITED SPECTRUM OF FORMALDEHYDE FROM 2700-CM-1 TO 3000-CM-1
BROWN, LR
HUNT, RH
PINE, AS
[J]. JOURNAL OF MOLECULAR SPECTROSCOPY, 1979, 75 (03) : 406 - 428
[3] Diode laser absorption measurements of CH3Cl and CH4 near 1.65 mu m
Chou, SI
Baer, DS
Hanson, RK
[J]. APPLIED OPTICS, 1997, 36 (15): : 3288 - 3293
[4] TUNABLE DIODE-LASER MONITORING OF ATMOSPHERIC TRACE GAS CONSTITUENTS
FEHER, M
MARTIN, PA
[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1995, 51 (10): : 1579 - 1599
[5] Photochemistry of formaldehyde during the 1993 Tropospheric OH Photochemistry Experiment
Fried, A
McKeen, S
Sewell, S
Harder, J
Henry, B
Goldan, P
Kuster, W
Williams, E
Baumann, K
Shetter, R
Cantrell, C
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1997, 102 (D5) : 6283 - 6296
[6] Tunable diode laser absorption spectrometer for ground-based measurements of formaldehyde
Fried, A
Sewell, S
Henry, B
Wert, BP
Gilpin, T
Drummond, JR
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1997, 102 (D5) : 6253 - 6266
[7] Temperature-dependent Sellmeier equation for the index of refraction, n(e), in congruent lithium niobate
Jundt, DH
[J]. OPTICS LETTERS, 1997, 22 (20) : 1553 - 1555
[8] Detection of formaldehyde using mid-infrared difference-frequency generation
Mine, Y
Melander, N
Richter, D
Lancaster, DG
Petrov, KP
Curl, RF
Tittel, FK
[J]. APPLIED PHYSICS B-LASERS AND OPTICS, 1997, 65 (06): : 771 - 774
[9] NRC (National Research Council), 1994, SPAC MAX ALL CONC SE, V1
[10] *ONT CORP, HITRAN 96

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