![]() ![]() 2 The perimeter is stabilized to within 0. Errors in operating the cavity are mainly caused by ther- mal strains both from external factors and from self-heating of the laser. ![]() 1 The structural layout of the adjustment system is shown in Fig. The adjustment system is the most important system for ensuring the operation of a laser ring gyroscope and largely determines its output parameters. A system for adjusting the perimeter is used to tune the lasing frequency of the sensitive element to the center of the gain curve when switching on the device, as well as when the perimeter of the sensitive element varies as a consequence of temperature variations of the cavity housing. Figure 1 shows the cavity of one of the gyroscopes being developed at NII Polyus. There are four mirrors at the corners of the optical circuit-two piezoelectric mirrors, one flat mirror, and one spherical mirror. Gyroscopes whose cavities have a square perimeter are being developed at the Polyus Scientific Research Institute (NII Polyus). The development of laser gyroscopes that are frequency- stabilized or have controllable frequency scanning is one of the applications of quantum electronics that are in demand and are being pursued. It is shown that the output parameters of the laser gyroscope can be substantially improved by changing the geometrical parameters of the design elements. Results are given of the numerical modelling of various designs of the piezo adjuster, including the existing design. ![]() A physicomathematical model for the piezo adjuster and a number of computer programs based on it are considered. The main requirements imposed on the piezo adjuster for its successful operation as part of the laser gyroscope are listed. The design of a piezo adjuster, which is the basic element of a system for adjusting the gyroscope perimeter, is considered. It is shown that the main error source of the gyroscope is temperature effects on the path length of the optical cavity. Stel’makh Polyus Scientific Research Institute, Moscow (Submitted February 15, 2011) Opticheski˘ ı Zhurnal 78, 13–15 (October 2011) This paper discusses a system for adjusting the perimeter of a frequency-stabilized ring laser gyroscope. Piezoelectric drive for a ring laser gyroscope N. ![]()
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