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Xiao-Juan Cui, Feng-Zhong Dong, Yu-Jun Zhang, Rui-Feng Kan, Yi-Ben Cui, Min Wang, Dong Chen, Jian-Guo Liu, Wen-Qing Liu. Development of a Broadly Tunable Mid-Infrared Laser Source for Highly Sensitive Multiple Trace Gas Detection[J]. Journal of Electronic Science and Technology, 2008, 6(4): 361-364.
Citation: Xiao-Juan Cui, Feng-Zhong Dong, Yu-Jun Zhang, Rui-Feng Kan, Yi-Ben Cui, Min Wang, Dong Chen, Jian-Guo Liu, Wen-Qing Liu. Development of a Broadly Tunable Mid-Infrared Laser Source for Highly Sensitive Multiple Trace Gas Detection[J]. Journal of Electronic Science and Technology, 2008, 6(4): 361-364.
shu

Development of a Broadly Tunable Mid-Infrared Laser Source for Highly Sensitive Multiple Trace Gas Detection

  • Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei,230031,China

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This work was supported by National Natural Science Foundation of China under Grant No. 50534050 and the Key Project of the Chinese Academy of Sciences under Grant No. KJCX2-SW-W27.

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  • Author Bio:

    Xiao-Juan Cui research interest is mainly focusing on high sensitive multiple trace gas detection with mid-IR DFG laser source;
    Feng-Zhong Dong interests are mainly focusing on highly sensitive gas detection for applications of environmental pollution monitoring and industrial process control, fzdong@aiofm.ac.cn

    Xiao-Juan Cui research interest is mainly focusing on high sensitive multiple trace gas detection with mid-IR DFG laser source;
    Feng-Zhong Dong interests are mainly focusing on highly sensitive gas detection for applications of environmental pollution monitoring and industrial process control, fzdong@aiofm.ac.cn

  • Received Date: 2008-09-17
  • Rev Recd Date: 2008-10-19
  • Publish Date: 2008-12-24
    Abstract
  • A room-temperature broadly tunable mid-infrared difference frequency laser source for highly sensitive trace gas detection has been developed recently in our laboratory. The mid-infrared laser system is based on quasi-phase-matched (QPM) difference frequency generation (DFG) in a multigrating, temperature-controlled periodically poled LiNbO3 (PPLN) crystal and employs two near-infrared diode lasers as pump sources. The mid-infrared coherent radiation generated is tunable from 3.2 m to 3.7 m with an output power of about 100 W. By changing one of the pump laser head with another wavelength range, we can readily obtain other needed mid-infrared wavelength range cover. The performance of the mid-infrared laser system and its application to highly sensitive spectroscopic detection of CH4, HCI, CH2O, and NO2 has been carried out. A multi-reflection White cell was used in the experiment gaining ppb-level sensitivity. The DFG laser system has the features of compact, room-temperature operation, narrow line-width, and broadly continuous tunable range for potential applications in industry and environmental monitoring.
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