Michael L. Jakobsen

Aug 15, 2024 | opg.optica.org | Paul Petersen |Michael L. Jakobsen |Joaquim Ferreira Dos Santos |Christian Pedersen

We study the impact of optical aberrations in underwater scanning confocal inelastic imaging arising from refraction at oblique incidences on a refractive index-mismatched air–glass–water interface. We experimentally demonstrate that optical aberrations at non-normal incidence drastically reduce the intensity of the inelastic signal and deteriorate the system resolution. At a 2.5° incidence angle, the return signal decreases to about 20% of its peak value at normal incidence.