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figure for Imaging through complex media

Imaging through complex media

Adaptive optics is used to improve imaging through an aberrating phase screen or to control spectral decorrelation through a scattering medium.

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figure for Imaging through a single optical fiber

Imaging through a single optical fiber

We demonstrate a method of imaging luminous or self-luminous objects through a single optical fiber. The method features high throughput, contains no moving parts, and is insensitive to fiber bending.

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figure for Oblique back-illumination microscopy

Oblique back-illumination microscopy

OBM provides DIC-like phase contrast in arbitrarily thick tissue. The technique is simple, fast (video rate), and can be implemented in an endoscope configuration.

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figure for Partioned aperture wavefront imaging

Partioned aperture wavefront imaging

Single-shot, quantitative phase imaging using a specially constructed lens. Our technique is achromatic, polarization independent, and light-efficient.

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figure for HiLo microscopy

HiLo microscopy

HiLo microscopy enables a standard widefield fluorescence or reflectance microscope to provide optical sectioning by using two images acquired with uniform and non-uniform (or "structured") illumination.

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Active illumination microscopy

AIM is a technique to enhance weak-signal sensitivity and increase dynamic range in a scanning microscope.

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Differential aberration imaging

DAI reduces fluorescence background in a standard TPEF microscope by using a switchable aberrating element in the laser illumination path.

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Dynamic speckle illumination microscopy

DSI microscopy enables a standard widefield fluorescence microscope to provide optical sectioning by using randomly changing speckle illumination.

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Autoconfocal microscopy

Autoconfocal microscopy (ACM) enables a two-photon excited fluorescence (TPEF) microscope to produce simultaneous phase contrast by using a virtual pinhole in the transmission direction.

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Graded field microscopy

Graded field microscopy reveals phase gradients in a sample by combining oblique illumination with oblique detection. The result is an image that resembles DIC.

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Nonlinear microscopy

Nonlinear optical microscopy provides contrast based on a nonlinear interaction of light and matter. Examples include two-photon excited fluorescence (TPEF) and second harmonic generation (SHG) microscopy.

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