Airy Beam Tomographic Microscopy Volumetric Imaging
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Solution Overview
Problem
Current tomographic imaging systems using Airy beams fall short in analyzing three-dimensional space for volumetric imaging of biological specimens due to the highly adjustable Airy trajectories, which limit their effectiveness in providing comprehensive 3D imaging capabilities.
Innovation Solution
The implementation of Airy-beam tomographic microscopy (ATM) systems that utilize self-accelerating, non-diffracting Airy beams to generate perspective views of samples, allowing for mechanical-scanning-free, volumetric three-dimensional imaging by manipulating the Airy beam trajectories and employing spatial light modulators to apply cubic spatial phases and phase chirps, enabling computational synthesis of the entire volume without the need for sample or focal-plane scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If Airy beams are used for optical imaging, then field of view and image quality are enhanced, but the highly adjustable Airy trajectories fall short when used for analysis in the entire three-dimensional space for volumetric imaging
Solution Approach 1:
The patent transitions from 2D optical sectioning to 3D volumetric imaging by rotating the Airy beam generation system around the sample. Multiple 2D optical sections acquired at different rotation angles are computationally reconstructed into a complete 3D volume, enabling comprehensive three-dimensional analysis while maintaining the enhanced field of view benefits of Airy beams
Solution Approach 2:
A spatial light modulator is introduced as an intermediary device to generate and control Airy beams. The SLM applies cubic phase modulation to convert Gaussian beams into Airy beams, enabling precise control of beam trajectories and facilitating both 2D optical sectioning and 3D volumetric reconstruction through computational methods
2Productivity
If conventional diffraction-limited beams are used, then mechanical scanning is required for volumetric imaging, but this increases device complexity and reduces productivity
Solution Approach 1:
The patent replaces mechanical scanning systems with a stationary Airy beam generation system. Instead of physically moving the sample or detector through multiple focal planes, the system uses spatial light modulators to generate Airy beams that naturally provide extended depth of field, and employs computational reconstruction to achieve volumetric imaging without mechanical movement
Solution Approach 2:
Airy beams inherently provide self-healing properties and extended depth of field without requiring external intervention or mechanical adjustment. The beams maintain their intensity profile over extended propagation distances, automatically providing optical sectioning capability across a large volume that eliminates the need for mechanical scanning to achieve the same effect
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides depth-invariant resolution across a substantially improved depth of field, mitigates the trade-off between axial and lateral diffraction, and allows for precise computational reconstruction of 3D volumes, enhancing the imaging capabilities and expanding the design space in technological fields.
Implementation Method 1
applying a Fourier transform to the beam of light, wherein the beam of light is in the form of a Gaussian beam
Implementation Method 2
modulating the Fourier transform by a cubic spatial phase
Implementation Method 3
Airy beams can propagate over many Rayleigh lengths without appreciable diffraction
Implementation Method 4
can be self-healing after being obscured in scattering media
Implementation Method 5
can undergo lateral displacement as they propagate, resulting in a curved self-accelerating trajectory
Implementation Method 6
obtaining a first perspective view of the sample by a detector, the first perspective view being generated by the Airy beam interacting with the sample on a focal plane
Implementation Method 7
reconstructing a volumetric three-dimensional view of the sample using the first perspective view and the second perspective view
Data Source
AI summary
Disclosed herein are methods of tomographic imaging, the methods comprising emitting a beam of light from a light source to a sample and modulating the beam of light through a spatial light modulator configured to convert the beam of light to an Airy beam. The spatial light modulator can be rotatable and positioned at a first angle relative to the sample. The method can further obtain a first perspective view of the sample, rotate the spatial light modulator to a second angle relative to the sample, and obtain a second perspective view of the sample. Each of the perspective views can be generated by the Airy beam interacting with the sample on a focal plane. The method can then reconstruct a volumetric three-dimensional view of the sample using the first perspective view and the second perspective view.