Scientific journal NRU ITMO
Series "Economics and Environmental Management"
Registration certificate ЭЛ № ФС 77 – 55411 от 17.09.2013
registered by the Federal Inspectorate Service for Communication, Information Technologies and Communication Media
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Home > Issue > PRECISION LASER-INTERFEROMETRIC METER OF DISTANCES AND DISPLACEMENTS

PRECISION LASER-INTERFEROMETRIC METER OF DISTANCES AND DISPLACEMENTS


A new method of performing high-precision measurements of absolute distance to reflecting object is described. The proposed principle of the measuring combines electronic method of determining distances and interferometric method of recording displacements using a meter of interference fringe fraction. A schematic diagram of proposed laser radio-interferometric meter is presented. The possibility of using changes in the length of the laser resonator and the visibility of the interference pattern in accurate long-range measurements is experimentally confirmed.  

Keywords: laser, interferometer, pathfinder, helium-neon laser

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