Longitudinal resonance modes exploited. Self-modulated-laser ranging system exploits presence of signals differing in frequency by longitudinalmode separation frequency fm. Two square-law photodetectors have outputs modulated by fm, and phase difference between two outputs is related to target distance. Laser transmitter/receiver measures distances as well as displacements of distant objects (such as vibrating buildings).


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    Title :

    Self-Modulated Laser Rangefinder


    Contributors:

    Published in:

    Publication date :

    1983-10-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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