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Updated: May 29, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Classical far-field phase-sensitive ghost imaging.

Dheera Venkatraman¹, Nicholas D Hardy, Franco N C Wong

¹Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. dheera@mit.edu

|September 21, 2011

Summary

This summary is machine-generated.

This study demonstrates far-field ghost imaging using phase-sensitive classical light, producing an inverted image. This contrasts with conventional phase-insensitive light, which yields an erect image with similar resolution and signal-to-noise ratio.

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Area of Science:

Quantum optics
Classical optics
Image formation

Background:

Ghost imaging is a technique that forms an image of an object using light that has not interacted with the object.
Conventional ghost imaging typically uses phase-insensitive light sources.

Purpose of the Study:

To demonstrate far-field ghost imaging using phase-sensitive classical-state light.
To compare the performance of phase-sensitive ghost imaging with conventional phase-insensitive ghost imaging.

Main Methods:

Generated phase-sensitive cross-correlation between signal and reference beams using synchronized spatial light modulators.
Imposed random, spatially varying, anticorrelated phase modulation on split laser beams.
Formed far-field ghost images of the same object using both phase-sensitive and phase-insensitive light.

Main Results:

Phase-sensitive ghost imaging produced an inverted image of the object.
Phase-insensitive ghost imaging produced an erect image of the object.
Both imaging methods demonstrated comparable spatial resolutions and signal-to-noise ratios.

Conclusions:

Phase-sensitive classical light can be effectively used for far-field ghost imaging.
The phase property of classical light influences the orientation of the reconstructed ghost image.
This work opens new avenues for ghost imaging techniques.