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Solid immersion axicon: maximizing nondiffracting or Bessel beam resolution.

¹iUreka, 31 Castleton, Ottawa, Ontario K2G 5P2, Canada. ilya.golub@rogers.com

|August 3, 2007

Summary

A novel solid immersion axicon (SIAX) enhances resolution for Bessel beams, offering the smallest focal spot for nondiffracting beams with radial polarization. This optical configuration has broad applications in microscopy and data storage.

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Area of Science:

Optics and Photonics
Beam Shaping
Nanotechnology

Background:

Diffraction limits resolution in optical systems.
Nondiffracting beams, like Bessel beams, offer unique propagation characteristics.
Solid immersion optics enhance resolution by increasing the numerical aperture.

Purpose of the Study:

To propose a new optical configuration, the solid immersion axicon (SIAX).
To investigate the resolution enhancement capabilities of SIAX for Bessel beams.
To explore the generation of the smallest focal spot for nondiffracting beams using SIAX.

Main Methods:

Theoretical proposal of the solid immersion axicon (SIAX) configuration.
Analysis of diffraction-limited resolution enhancement for Bessel beams.
Investigation of focal spot characteristics for radially polarized incident light.

Main Results:

The SIAX increases diffraction-limited resolution for Bessel beams by the refractive index of the medium.
The SIAX configuration generates the smallest focal spot for nondiffracting beams when using radial polarization.
The SIAX can be implemented using refractive or diffractive axicons.

Conclusions:

The solid immersion axicon (SIAX) offers significant resolution enhancement for Bessel beams.
SIAX enables the generation of highly focused, nondiffracting beams.
Potential applications include advanced microscopy, lithography, and data storage.