This paper describes how the angular spectrum of a laser beam is determined, in order to estimate the relevant correction in optical interferometers as applied to length measurements. Tests and numerical simulations carried out to assess the measurement procedure delivered clues of deviations from a free-space propagation due to scattering centers in the beam path. Based on the simulation results, additional measurements are ongoing to confirm this evidence.
Diffraction Error in Laser Interferometry for the Measurement of the 28Si Lattice Parameter / Sasso, Carlo P.; Andreas, Birk; Mana, Giovanni; Massa, Enrico. - (2018), pp. 1-2. (Intervento presentato al convegno 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) tenutosi a Paris (France) nel 8-13 July 2018) [10.1109/CPEM.2018.8501211].
Diffraction Error in Laser Interferometry for the Measurement of the 28Si Lattice Parameter
Sasso, Carlo P.;Mana, Giovanni;Massa, Enrico
2018
Abstract
This paper describes how the angular spectrum of a laser beam is determined, in order to estimate the relevant correction in optical interferometers as applied to length measurements. Tests and numerical simulations carried out to assess the measurement procedure delivered clues of deviations from a free-space propagation due to scattering centers in the beam path. Based on the simulation results, additional measurements are ongoing to confirm this evidence.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
