Compact CH4 sensor based on difference frequency mixing of diode lasers in quasi-phasematched LiNbO3

被引：41

作者：

Lancaster, DG

Weidner, R

Richter, D

Tittel, FK

Limpert, J

机构：

[1] Rice Univ, Rice Quantum Inst, Dept Elect & Comp Engn, Houston, TX 77005 USA

[2] Univ Jena, Inst Angew Phys, D-6900 Jena, Germany

来源：

OPTICS COMMUNICATIONS | 2000年 / 175卷 / 4-6期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

difference frequency generation; molecular spectroscopy; trace gas detection; methane;

D O I：

10.1016/S0030-4018(00)00485-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A compact, portable and robust room temperature CH4 sensor is reported. By difference frequency mixing a 500 mW alpha-DFB diode laser at 1066 nm and an erbium-doped fiber amplified 1574 nm DFB diode laser in periodically poled lithium niobate up to 7 mu W of narrowband radiation at 3.3 mu m is generated. Real-time monitoring of CH4 over a 7 day period using direct absorption in an open-path multipass cell (L = 36 m) demonstrates a detection precision of +/- 14 ppb. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：461 / 468

页数：8

相关论文

共 11 条

[1] Mid-infrared difference-frequency generation source pumped by a 1.1-1.5-μm dual-wavelength fiber amplifier for trace-gas detection [J].

Goldberg, L ;

Koplow, J ;

Lancaster, DG ;

Curl, RF ;

Tittel, FK .

OPTICS LETTERS, 1998, 23 (19) :1517-1519

[2] Temperature-dependent Sellmeier equation for the index of refraction, n(e), in congruent lithium niobate [J].

Jundt, DH .

OPTICS LETTERS, 1997, 22 (20) :1553-1555

[3] Portable fiber-coupled diode-laser-based sensor for multiple trace gas detection [J].

Lancaster, DG ;

Richter, D ;

Tittel, FK .

APPLIED PHYSICS B-LASERS AND OPTICS, 1999, 69 (5-6) :459-465

[4] Real-time measurements of trace gases using a compact difference-frequency-based sensor operating at 3.5 μm [J].

Lancaster, DG ;

Richter, D ;

Curl, RF ;

Tittel, FK .

APPLIED PHYSICS B-LASERS AND OPTICS, 1998, 67 (03) :339-345

[5] Fibre coupled difference frequency generation utilising ytterbium-doped fibre amplifier and periodically poled LiNbO3 [J].

Lancaster, DG ;

Goldberg, L ;

Koplow, J ;

Curl, RF ;

Tittel, FK .

ELECTRONICS LETTERS, 1998, 34 (13) :1345-1347

[6] Detection of CO in air by diode-pumped 4.6-mu m difference-frequency generation in quasi-phase-matched LiNbO3 [J].

Petrov, KP ;

Goldberg, L ;

Burns, WK ;

Curl, RF ;

Tittel, FK .

OPTICS LETTERS, 1996, 21 (01) :86-88

[7]

Sass R., 1992, ECOL, P199

[8] METHANE EMISSIONS FROM RICE FIELDS - EFFECT OF SOIL PROPERTIES [J].

SASS, RL ;

FISHER, FM ;

LEWIS, ST ;

JUND, MF ;

TURNER, FT .

GLOBAL BIOGEOCHEMICAL CYCLES, 1994, 8 (02) :135-140

[9] SLOWING DOWN OF THE GLOBAL ACCUMULATION OF ATMOSPHERIC METHANE DURING THE 1980S [J].

STEELE, LP ;

DLUGOKENCKY, EJ ;

LANG, PM ;

TANS, PP ;

MARTIN, RC ;

MASARIE, KA .

NATURE, 1992, 358 (6384) :313-316

[10] Room-temperature mid-infrared laser sensor for trace gas detection [J].

Topfer, T ;

Petrov, KP ;

Mine, Y ;

Jundt, D ;

Curl, RF ;

Tittel, FK .

APPLIED OPTICS, 1997, 36 (30) :8042-8049