Interferometry Of Large Diameter Beam Expanders

Bill Mullins

doi:10.1117/12.932021

30 December 1981 Interferometry Of Large Diameter Beam Expanders

Bill Mullins

Proceedings Volume 0288, Los Alamos Conf on Optics '81; (1981) https://doi.org/10.1117/12.932021
Event: Los Alamos Conference on Optics, 1981, Los Alamos, United States

Abstract

In laser beam propagation studies, wavefront aberrations introduced by the beam handling optics must be known to truly characterize the atmospheric effects on the laser beam. Hence, careful optical interferometry was performed on a laser beam expander and its asso-ciated relay optics, before it was used for propagation experiments. However, recent studies by Bennett, et al.1, have shown that interferometric measurements of mirrors with enhanced reflection coatings must be performed at the designed wavelength. Bennett's studies show that measuring these enhanced reflecting coatings off-band produces erroneous wavefront errors. An experiment was performed to see if this interferometric measurement problem existed in our system which contained one enhanced reflecting mirror.

Citation Download Citation

Bill Mullins "Interferometry Of Large Diameter Beam Expanders", Proc. SPIE 0288, Los Alamos Conf on Optics '81, (30 December 1981); https://doi.org/10.1117/12.932021

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