Measurements of benzene concentration by difference-frequency laser absorption spectroscopy

Weidong Chen; Fabrice Cazier; Frank Tittel

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Measurements of benzene concentration by difference-frequency laser absorption spectroscopy

机译：差频激光吸收光谱法测量苯浓度

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Measurements of berizene concentration based on high-resolution laser absorption spectroscopy by use of the R(6) transition in the v_(4) fundamental vibrational band near 14.8 μm (676.6 cm~(-1)) are reported. These measurements were performed with a tunable continuous-wave, mid-infrared spectroscopic light source that employs difference-frequency mixing of two Ti:sapphire lasers in a GaSe nonlinear optical crystal. A minimum benzene concentration detection of ～11.5 parts in 10~(6) was realized at a reduced pressure of 40 mbars.

机译：报道了基于高分辨率激光吸收光谱法通过在14.8μm（676.6 cm〜（-1））附近的v_（4）基本振动带中的R（6）跃迁测量苯的浓度。这些测量是使用可调谐连续波中红外光谱光源进行的，该光源在GaSe非线性光学晶体中采用两个Ti：蓝宝石激光器的差频混合。在40 mbar的减压下，实现了10〜（6）中〜11.5的最小苯浓度检测。

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《Applied optics》 |2000年第33期|共5页
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Weidong Chen; Fabrice Cazier; Frank Tittel;
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正文语种 eng
中图分类光学;
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Measurements of benzene concentration by difference-frequency laser absorption spectroscopy

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