Photoacoustic trace-gas detection using a cw single-frequency parametric oscillator

被引：69

作者：

Kuhnemann, F

Schneider, K

Hecker, A

Martis, AAE

Urban, W

Schiller, S

Mlynek, J

机构：

[1] Univ Bonn, Inst Angew Phys, D-53115 Bonn, Germany

[2] Univ Konstanz, Fak Phys, D-78457 Constance, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1998年 / 66卷 / 06期

关键词：

D O I：

10.1007/s003400050461

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report extra-cavity photoacoustic trace-gas detection of ethane (C2H6) at 3.34 mu m using a widely tunable cw single-frequency optical parametric oscillator. The high frequency and power stability and the continuous tunability of the parametric oscillator make it ideally suited for this application. Detection sensitivities of 0.5 ppb for ethane are obtained, which is comparable to the best results previously obtained with intracavity detection using line-tunable CO overtone lasers. The flexibility and compact size of cw single-frequency parametric oscillators can lead to portable photoacoustic trace-gas detection systems for environmental monitoring and process control.

引用

页码：741 / 745

页数：5

共 30 条

[1] Long-term stable operation and absolute frequency stabilization of a doubly resonant parametric oscillator [J].