Two-dimensional mapping of electro-optic phase retardation in lithium niobate crystals by digital holography

• We demonstrate accurate two-dimensional mapping of the phase retardation induced by the electro-optic effect in lithium niobate crystals. Off-axis digital holography is used to investigate congruent z-cut crystals. The spatially resolved optical path difference is interferometrically measured while a linearly rising voltage ramp is applied to the crystal. This procedure provides information on the uniformity of crystals' electro-optic properties and offers the ability to detect the presence of defects that is of fundamental importance for reliable processing of photonic devices.

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

Interferometric Method; Ferroelectric Domains; Internal Field; Reconstruction; Visualization; Linbo3

Optical physics

Optisk fysik

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)