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Intensity correlation holography for remote phase sensing and 3D imaging
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DOI：10.1364/OE.504514.png)
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Abstract
En 中文
Holography is an established technique for measuring the wavefront of optical signals through interferometric combination with a reference wave. Conventionally the integration time of a hologram is limited by the interferometer coherence time, thus making it challenging to prepare holograms of remote objects, especially using weak illumination. Here, we circumvent this limitation by using intensity correlation interferometry. Although the exposure time of individual holograms must be shorter than the interferometer coherence time, we show that any number of randomly phase-shifted holograms can be combined into a single intensity-correlation hologram. In a proof-of-principle experiment, we use this technique to perform phase imaging and 3D reconstruction of an object at a similar to 3 m distance using weak illumination and without active phase stabilization.
Keywords:
SHIFTING INTERFEROMETRY
DIGITAL HOLOGRAPHY
SHAPE MEASUREMENT
LIGHT
EXTRACTION
MICROSCOPY
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W