Photoacoustic detection of nitric oxide with a Helmholtz resonant quantum cascade laser sensor

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• 作者：Agnè ; s Grossel ; Virginie Zé ; ninari ; Lilian Joly ; Bertr ; Parvitte ; Georges Durry ; Daniel Courtois
• 关键词：Quantum cascade laser ; Photoacoustic detection ; Nitric oxide
• 刊名：Infrared Physics and Technology
• 出版年：2007
• 出版时间：October 2007
• 年：2007
• 卷：51
• 期：2
• 页码：95-101
• 全文大小：722 K

文摘

Nitric oxide detection has been performed with a Helmholtz resonant photoacoustic sensor previously developed in Reims. The cell was coupled with a continuous wave distributed feedback quantum cascade laser working at cryogenic temperature in continuous wave mode in the 5.4 μm region. A detection limit of 20 ppb of nitric oxide in nitrogen with a laser power of 3 mW can be predicted. Possible applications and improvements are discussed.