Highly sensitive detection of CO2 molecule using near-infrared diode laser absorption spectroscopy

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Journals >Chinese Journal of Quantum Electronics >Volume 22 >Issue 3 >Page 423 > Article

Chinese Journal of Quantum Electronics
Vol. 22, Issue 3, 423 (2005)

Highly sensitive detection of CO₂ molecule using near-infrared diode laser absorption spectroscopy

[in Chinese]^1、2、*, [in Chinese]^1、2, [in Chinese]², [in Chinese]², [in Chinese]², [in Chinese]¹, and [in Chinese]²

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¹[in Chinese]

²[in Chinese]

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DOI: Cite this Article

[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Highly sensitive detection of CO₂ molecule using near-infrared diode laser absorption spectroscopy[J]. Chinese Journal of Quantum Electronics, 2005, 22(3): 423 Copy Citation Text

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Abstract

Observation of CO₂ by combined near-infrared tunable diode laser with direction absorption spectroscopy and wavelength modulation spectroscopy around 1.31 μm was presented. A minimum detectable absorption line intensity of 3.769 ×10-27 cm-1/(molecule·cm-2) was achieved at the pressure of 5 Torr, with a corresponding SNR of 16.8.

Keywords

absorption spectroscopy high sensitivity detection second harmonic spectroscopy wavelength modulation

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