Publication

Digital holographic confocal microscope

Demetri Psaltis, Alexandre Goy
2013
Conference Papers

Abstract

We demonstrate experimentally a scanning confocal microscopy technique based on digital holographic recording of the scanned spot. The data collected in this way contains all the information to produce three-dimensional images. Several methods to treat the data are presented, such as the dynamic placement of the pinhole. Examples of reflection and transmission images of epithelial cells and mouse brain tissue are shown. The computations can be performed in real time, the speed being limited only by the frame rate of the camera. This method enables a convenient implementation of confocal microscopy, especially in transmission as no de-scan device is required.

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https://infoscience.epfl.ch/entities/publication/3add69ee-e103-4e3e-828c-b6242d7a1ded

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Demetri Psaltis, Alexandre Goy
2013
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/3add69ee-e103-4e3e-828c-b6242d7a1ded

About this result

Related concepts (17)

Microscopy

Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical, electron, and scanning probe microscopy, along with the emerging field of X-ray microscopy. Optical microscopy and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beams interacting with the specimen, and the collection of the scattered radiation or another signal in order to create an image.

Confocal microscopy

Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. Capturing multiple two-dimensional images at different depths in a sample enables the reconstruction of three-dimensional structures (a process known as optical sectioning) within an object.

Super-resolution microscopy

Super-resolution microscopy is a series of techniques in optical microscopy that allow such images to have resolutions higher than those imposed by the diffraction limit, which is due to the diffraction of light. Super-resolution imaging techniques rely on the near-field (photon-tunneling microscopy as well as those that use the Pendry Superlens and near field scanning optical microscopy) or on the far-field.

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