Full-field optical coherence microscopy based on acousto-optic filtration of interference images

Abstract

The problem of three-dimensional near-surface imaging of microscopic structures is discussed. A new scheme of optical coherence microscope with detection in the spectral domain is proposed. It is based on a broadband light source and filtration of interference images by a tunable acousto-optic imaging filter placed in the detection channel. The applicability of the scheme for analyzing depth distributions of object properties is experimentally demonstrated.

Contrast enhancement in microscopy of human thyroid tumors by means of acousto-optic adaptive spatial filtering

“…Several HSI systems based on AOTFs are commercially available now. Spectral image processing by means of AOTFs can also be used in various image processing techniques, for instance, optical coherence microscopy 13 and imaging spectropolarimetry. [14][15][16][17] In the case of monochromatic coherent input light, AOTFs perform spatial filtering of optical beams and can be used for such image processing operations as optical phase detection, edge enhancement, and low-pass and high-pass spatial filtering.…”