Molecular scattering Doppler lidar for coherent optical paths
A Doppler laser and molecular scattering technology, which is applied in the fields of photoelectric detection, atmospheric detection, and laser remote sensing, can solve problems such as the inability to measure wind speed in the upper atmosphere, and achieve the effects of small size, strong environmental adaptability, and small pulse width
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[0024] Example
[0025] figure 1 This is a schematic structural diagram of a molecular scattering Doppler lidar with a coherent optical path provided by an embodiment of the present invention. Such as figure 1 As shown, it mainly includes: tunable pulse laser 1, first and second fiber beam splitters (2 and 8), beam expander 3, polarization beam splitter 4, λ / 4 wave plate 5, transmission telescope 6, Converging lens 7 and laser frequency measuring device 9; among them:
[0026] The tunable pulse laser 1, the first fiber beam splitter 2, the beam expander 3, the polarization beam splitter 4, the λ / 4 wave plate 5 and the transmission telescope 6 are connected in sequence; one end of the polarization beam splitter 4 is also Converging lens 7 is connected; the A port of the second fiber splitter 8 is connected to the first fiber splitter 2, the B port is connected to the converging lens 7, and the parallel light beam converged by the converging lens 7 is received, and the C port is c...
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