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Easy-to-build Wollaston-like polarization splitter with adjustable beam deviation and tunable chromatic dispersion
Optics Express
|November 6, 2019
Summary
Researchers developed a novel polarization splitter using geometrical phase lenses. This component effectively separates light into two circularly polarized beams with adjustable angles and broad wavelength compatibility.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Polarization splitters are crucial optical components for manipulating light polarization.
- Conventional devices like Wollaston prisms have limitations in tunability and dispersion characteristics.
Purpose of the Study:
- To demonstrate a new type of polarization splitter utilizing commercially available geometrical phase lenses.
- To characterize the performance of this novel component in terms of separation angle, wavelength range, and tunability.
Main Methods:
- Fabrication of a polarization splitter using a pair of geometrical phase lenses.
- Experimental characterization of the splitter's performance across various separation angles and wavelengths.
- Development of an analytical model to describe the component's behavior.
Main Results:
- Achieved excellent polarization separation for separation angles from 0 to 120 mrad.
- Demonstrated functionality across a wide wavelength range (532 nm to 780 nm).
- Observed significant wavelength dispersion, characteristic of a tunable polarization grating.
Conclusions:
- Geometrical phase lenses offer a versatile platform for creating tunable polarization splitters.
- The developed component provides an alternative to conventional polarization optics with unique tunable dispersion properties.
