Measuring light polarization is important for the characterization of the laser light. In the thesis, we devise a polarimeter that enables accurate measurement of light polarization states in real time. For the devised optomechatronical system we show the realization of the measuring and control units, and the choice of optical, mechanical and electronic components. We devised an electrical circuit that facilitates the connections among individual components. On the electrical circuit, we integrated a microcontroller that represents a logical unit of the devised polarimeter. A control algorithm is implemented on the microcontroller which enables data acquisition and communication with the user. The polarimeter uses the principle of rotating optical waveplates and a fixed polarizer with Strokes-Muller formulation. Measuring at different wavelengths can be achieved by a simple substitution of the optical elements. For this we devised a calibration procedure. A user can control the polarimeter via LCD screen or a personal computer. For this purpose, a user interface was written that allows for control, calibration and analysis of measurements. We established a procedure for determining the measurement uncertainty in order to control for the correct functioning of the devised polarimeter. To achieve that, we used a laser source with $\lambda = 1064$ nm wavelength, \mbox{1 Mhz} laser beam frequency and t$_\text{FWHM}$ = 1 ns beam length. With the devised polarimeter, we can measure Strokes parameters with an expanded measurement uncertainty of 0.02 and a maximum frequency measurement of 3 samples/s.
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