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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
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Simple and compact plano-conical grating lens for optical chain generation.
Applied Optics
|August 12, 2025
Summary
This study presents a novel all-dielectric grating lens for generating controllable optical chain focal fields. The design allows simple manipulation of foci using radially polarized light and incidence parameters.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- All-dielectric subwavelength gratings offer unique optical properties.
- Controlling optical focal fields is crucial for advanced applications.
Purpose of the Study:
- To introduce a compact plano-conical grating lens for generating controllable optical chain focal fields.
- To demonstrate simple control over focal field manipulation for cylindrical vector beams (CVBs).
Main Methods:
- Utilizing negative refraction of the -1st order diffraction from subwavelength gratings.
- Incorporating a central aperture to minimize diffraction and scattering.
- Employing radially polarized light and adjusting grating periods and incidence parameters.
Main Results:
- Achieved simple control over the number of foci in the optical chain by adjusting grating periods.
- Demonstrated further control over foci number and energy uniformity via incidence parameter modulation.
- Successfully generated controllable optical chain focal fields using a single material lens.
Conclusions:
- The plano-conical grating lens offers a novel and simple strategy for focal field manipulation of CVBs.
- This approach provides a reference for designing negative refraction microlenses.
- Potential applications include optical micromanipulation and optical tweezer technology.
