Cylindrical mirror multipass Lissajous system for laser photoacoustic spectroscopy

  • Lu-yuan Hao
    Department of Chemical Physics, Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • Shi Qiang
    Department of Chemical Physics, Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • Guo-rong Wu
    Department of Chemical Physics, Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • Li Qi
    Department of Chemical Physics, Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • Dang Feng
    Department of Chemical Physics, Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • Qing-shi Zhu
    Department of Chemical Physics, Open Laboratory of Bond Selective Chemistry, University of Science and Technology of China, Hefei 230026, People’s Republic of China
  • Zhang Hong
    China Chang Feng Science and Technology Industry Group, P.O. Box 3925, Beijing 100854, People’s Republic of China

書誌事項

公開日
2002-05-01
DOI
  • 10.1063/1.1464653
公開者
AIP Publishing

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説明

<jats:p>A simple optical multiple reflection system is developed with two cylindrical concave mirrors at an appropriate spacing. The two cylindrical mirrors have different focal lengths and their principal sections are orthogonal. The alternate focusing of the two cylindrical mirrors at different direction keep the reflecting spots small. The reflecting spots fall on Lissajous patterns on the cylindrical mirrors. The mathematics for this optical system is described and the calculated coordinates of beam spots are very close matches of the experimental observations. The cylindrical mirror optical system is easy to construct and align, with a suitable method for obtaining long optical paths and a large number of passes in small volumes. In a photoacoustic spectrometer the beam family enhance the effective power in the photoacoustic cell and thus the signal-to-noise ratio of photoacoustic signal. An experimental result for photoacoustic spectrum of HDSe gas is given.</jats:p>

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