Influence of the diffraction of light beams on phase measurements in nonlinear refractometry Azarenkov, A. N. ; Bezzubik, V. V. ; Belashenkov, N. R. ; Inochkin, M. V. ; Karasev, V. B. ; Studenikin, L. M. Abstract Publication: Journal of Optical Technology Pub Date: April 2000 Bibcode: 2000JOptT..67..355A