All-silicon metalens for broadband achromatic polarization multiplexing in long-wave infrared wavelengths.
Appl Opt
; 63(12): 3242-3249, 2024 Apr 20.
Article
en En
| MEDLINE
| ID: mdl-38856473
ABSTRACT
Traditional long-wave infrared polarimetry usually relies on complex optical setups, making it challenging to meet the increasing demand for system miniaturization. To address this problem, we design an all-silicon broadband achromatic polarization-multiplexing metalens (BAPM) operating at the wavelength range of 9-12 µm. A machine-learning-based design method is developed to replace the tedious and computationally intensive simulation of a large number of meta-atoms. The results indicate that the coefficients of variation in focal length of the BAPM are 3.95% and 3.71%, and the average focusing efficiencies are 41.3% and 40.5% under broadband light incidence with x- and y-polarizations, respectively.
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01-internacional
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MEDLINE
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En
Revista:
Appl Opt
Año:
2024
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Article