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CO_2分子的近红外二极管激光吸收光谱灵敏探测 被引量:24

Sensitive Detection of CO_2 Molecule Using Near Infrared Diode Laser Absorption Spectroscopy
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摘要 利用近红外二极管激光波长调制技术与二次谐波探测结合初步观测了CO2 分子在波长 1.5 7μm附近的吸收 ,获得了最小可探测吸收为 8.6× 10 -5(信噪比为 2 ) ,对应 5 0 0× 10 -6m-1的探测灵敏度。 The initial observation of CO 2 absorption at 1.57 μm near-infrared tunable diode laser wavelength modulation spectroscopy (WMS) combined with second harmonic detection reported. A minimum detectable absorption of 8.6×10 -5 (signal-noise-ratio is 2) was achieved, it corresponds to 500×10 -6 detection sensitivity.
出处 《光学学报》 EI CAS CSCD 北大核心 2003年第5期609-611,共3页 Acta Optica Sinica
关键词 光谱学 二氧化碳分子 光谱学 二极管激光器 波长调制 二次谐波 高灵敏度探测 探测灵敏度 信噪比 spectroscopy wavelength modulation second harmonic high sensitivity detection
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