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High-performance metasurface polarizers with extinction ratios exceeding 12000
Optics Express
|March 1, 2017
Summary
Researchers developed ultrathin polarizers using stacked complementary (SC) metasurfaces. These high-performance devices, made with nanoimprint lithography, achieve excellent extinction ratios at telecommunication wavelengths.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Metasurfaces offer unique light manipulation capabilities.
- Developing ultrathin optical components with high performance is challenging.
- Polarizers are crucial for various optical applications.
Purpose of the Study:
- To demonstrate high-performance ultrathin polarizers.
- To investigate stacked complementary (SC) metasurfaces for polarization control.
- To optimize polarizer performance at telecommunication wavelengths.
Main Methods:
- Fabrication of SC metasurfaces using nanoimprint lithography.
- Experimental characterization of polarizer performance.
- Analysis of extinction ratios and spectral optimization.
Main Results:
- Experimentally demonstrated ultrathin polarizers with subwavelength thickness.
- Achieved large extinction ratios (>17000 for Ag, >12000 for Au).
- Optimized SC metasurface polarizers for telecommunication wavelengths.
Conclusions:
- SC metasurfaces are a viable platform for high-performance ultrathin polarizers.
- Nanoimprint lithography enables efficient fabrication.
- These polarizers show great potential for telecommunication applications.
