Design and implementation of a non-mechanical scanning F-P type laser warning method
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TN249

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    Abstract:

    In the laser warning system, a non-mechanical scanning Fabry-Perot (F-P) type laser warning method and its crucial component-laser incident sensor design method are brought out, and the F-P etalon with the interferometric filter combination is adopted. For the incident laser pulse with a certain wavelength, the transmittance difference of the interferometric filters is independent with polarization of incident light, and descends almost linearly as the incident angle gets wider. A laser incident angle sensor experimental platform is built up, and the experiment is carried out with a given laser range finder. As the results indicate, when the incident angle is less than 5°, the transmittance difference measured by the laser angle sensor is significantly lower, and the deviation is more than 10%. While the incident angle is greater than 10°, the deviation is reduced significantly.

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Hong-bin Shen. Design and implementation of a non-mechanical scanning F-P type laser warning method[J]. Optoelectronics Letters,2010,6(5):384-387

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