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Updated: Feb 11, 2026
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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
Published on: January 15, 2013
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Extending axial focus of optical coherence tomography using parallel multiple aperture synthesis
Applied Optics
|May 5, 2018
Summary
A new parallel multiple aperture synthesis (pMAS) technique extends optical coherence tomography
Area of Science:
- Optical coherence tomography (OCT)
- Optical imaging
- Microscopy
Background:
- The trade-off between transverse resolution and depth of focus (DOF) is a persistent challenge in optical coherence tomography (OCT).
- Achieving high resolution over an extended depth is crucial for various OCT applications.
Purpose of the Study:
- To introduce a novel technique, parallel multiple aperture synthesis (pMAS), to overcome the resolution-DOF trade-off in OCT.
- To demonstrate simultaneous generation of multiple optical apertures for enhanced imaging capabilities.
Main Methods:
- Development of a parallel multiple aperture synthesis (pMAS) technique using a two-surface coated mirror.
- Digital synthesis of multiple distinct apertures within the OCT sample arm.
- Experimental validation using microparticle and biological tissue samples.
Main Results:
- The pMAS technique successfully extended the depth of focus (DOF) by a factor of 16.49.
- Transverse resolution was maintained without compromise.
- Proof-of-concept experiments confirmed the feasibility of the pMAS approach.
Conclusions:
- Parallel multiple aperture synthesis (pMAS) effectively addresses the fundamental limitation of restricted DOF in high-resolution OCT.
- This technique offers a promising solution for advanced OCT imaging with improved volumetric coverage.
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