Quantum cascade laser-based photoacoustic sensor for trace detection of formaldehyde gas.
Quantum cascade laser-based photoacoustic sensor for trace detection of formaldehyde gas.
复制标题
DOI:
10.3390/s90402697
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Scamarcio G
中科院分区:
文献类型:
--
作者:
Elia A;Di Franco C;Spagnolo V;Lugarà PM;Scamarcio G
We report on the development of a photoacoustic sensor for the detection of formaldehyde (CH2O) using a thermoelectrically cooled distributed-feedback quantum cascade laser operating in pulsed mode at 5.6 μm. A resonant photoacoustic cell, equipped with four electret microphones, is excited in its first longitudinal mode at 1,380 Hz. The absorption line at 1,778.9 cm−1 is selected for CH2O detection. A detection limit of 150 parts per billion in volume in nitrogen is achieved using a 10 seconds time constant and 4 mW laser power. Measurements in ambient air will require water vapour filters.
登录
查看更多内容
影响因子:
2.1
作者:
Dahnke, H;Von Basum, G;Mürtz, M
通讯作者:
Mürtz, M
影响因子:
2.1
作者:
Horstjann, M;Bakhirkin, YA;Yang, RQ
通讯作者:
Yang, RQ
影响因子:
1.4
作者:
Perrin, A;Keller, F;Flaud, JM
通讯作者:
Flaud, JM
影响因子:
3.6
作者:
Elia, A;Lugará, PM;Giancaspro, C
通讯作者:
Giancaspro, C
影响因子:
2.1
作者:
Lima, J. P.;Vargas, H.;Hess, P.
通讯作者:
Hess, P.