Position-Sensitive Registration of Displacement of a Single-Mode Laser Beam Spot by the Method of Dividing Plates
Seminars
Dzhelepov Laboratory of Nuclear Problems
DLNP Joint Seminar
Date and Time: Wednesday, 17 November 2021, at 11:00 AM
Venue: Online conference on Zoom
Information about seminar and link to join via Zoom
Seminar topic: “Position-Sensitive Registration of Displacement of a Single-Mode Laser Beam Spot by the Method of Dividing Plates”
Speaker: M. V. Lyablin
Abstract:
A new position-sensitive method of dividing plates for recording a single-mode laser beam displacement has been experimentally investigated.
It was shown that the sensitivity of the method when recording a laser beam with a diameter of 8.8 µm reaches 0.18 µm-1 with a zone of possible linear displacements limited by a nonlinearity of 1%, equal to 2.4 µm. The achievable measurement accuracy, limited by the ADC noise, was ± 30 rm.
Application of the method of dividing plates allows implementing a Precision Laser Inclinometer with reduced overall dimensions of 20 × 20 × 20 cm and up to 10 kg in weight.