Laser automated stations for contactless measurement of internal stresses AND CONTROL OF LOCAL optical inhomogeneities

摘要

The proposed utility model for contactless measurement of mechanical stresses and internal control local optical inhomogeneities relates to the field of electronics and can be used in the semiconductor industry as well as in the instrument and Radio Engineering.; The claimed technical solution is directed to a high-speed laser automated station for contactless measurement of mechanical stresses and internal control local optical inhomogeneities in optically transparent bodies in real time.; To solve this problem automated laser station has a platform on which the compact has a source of optical radiation, scan drive and optical-electrical components of the system. the optical radiation source is made single-mode and small divergence. Components opto-electrical system are structurally united in blocks: the polarization-modulating unit consisting of the polarizer and the Pockels cell, a bipolar AC voltage driver, and the optical head composed of short throw microscope objective, analyzer, collecting lens, and a photodetector with gallium-arsenide photodiode. Scanning Drive motors equipped with a speed of at least 10 mm / s, the control system and the digital processing features multichannel analog-to-digital converter with a conversion frequency of at least 1 MHz, integrated into the control computer.