Investigation of contrast ratio dependence on the angular deviation of the laser beam direction from the optical axis of Pockels cells based on the beta barium borate crystal

  • G. Sinkevičius
  • A. Baškys
Keywords: optical properties, electro-optical effects, Q-switching, laser radiation characteristics, optical transmission coefficients, nonlinear optical crystals


Dependences of the contrast ratio on the angular deviation of the optical axis with a step of 2 arcmin 28 arcsec have been obtained for Pockels cells based on beta barium borate crystals in the 49 arcmin 34 arcsec range. The investigation was conducted for a single Pockels cell and for a double cell based on optically aligned crystals. The results of investigations can be applied for the calculation of the laser beam focus in order to use a high contrast ratio in high-power laser systems when the light is modulated using Q-switching.
Nonlinear and Coherent Optics