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Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

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Refractive twisted microaxicons.

S N Khonina, S V Krasnov, A V Ustinov

|March 13, 2020

Summary

This summary is machine-generated.

We introduce a novel twisted microaxicon, an optical element that generates high-quality spiral light patterns. This innovation offers precise control over light field generation for advanced optical applications.

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Area of Science:

Optics and Photonics
Micro-optics
Light Field Engineering

Background:

Complex light fields are crucial for applications like optical tweezers and laser processing.
Existing optical elements have limitations in generating tailored intensity, phase, and polarization distributions.

Purpose of the Study:

To propose and analyze a novel optical element, the twisted microaxicon, for generating spiral-shaped intensity patterns.
To investigate the geometric parameters controlling the generated light patterns.

Main Methods:

Analytical and numerical analysis using ray approximation.
Rigorous finite difference time domain (FDTD) solution of Maxwell's equations.
Exploration of apex cone angle and twisting degree as key parameters.

Main Results:

Demonstrated controllable generation of high-quality spiral-shaped intensity patterns.
Showcased the influence of geometric parameters on pattern optimization.
Confirmed the unique 3D structure of the microaxicon, distinguishing it from thin optical elements.

Conclusions:

The twisted microaxicon is a novel element for generating complex spiral light fields.
Fabrication is feasible via laser ablation or two-photon photopolymerization.
Potential applications in micro- and nano-optics are significant.