Mid-infrared full-Stokes polarization detection based on dielectric metasurfaces

Li, Xueshen; Wang, Hui; Xu, Xianmei; Ju, Lin; Fan, Zhigang; Chen, Shouqian

doi:10.1016/j.optcom.2020.126690

Cited by 10 publications

(4 citation statements)

References 36 publications

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“…Subsequently, we obtained the measurement results for different polarization component at the focal plane separately using the standard algorithm. The function employed to reconstruct the full‐Stokes parameter matrix S = [ S 0 , S 1 , S 2 , S 3 ] T at the target pixel spots is modified to that [ 20,44 ]

\begin{equation}{S_0} = A_x^2 + A_y^2\end{equation}

\begin{equation}{S_1} = A_x^2 - A_y^2\end{equation}

\begin{equation}{S_2} = 2{A_x}{A_y}\cos \left( {{\delta _1} - {\delta _2}} \right) = A_{{{45}^ \circ }}^2 - A_{{{135}^ \circ }}^2\end{equation}

\begin{equation}{S_3} = 2{A_x}{A_y}\sin \left( {{\delta _1} - {\delta _2}} \right) = A_{\mathrm{R}}^2 - A_{\mathrm{L}}^2\end{equation}

where A 45° and A 135° represent the amplitude projection along linearly diagonal and antidiagonal polarized, and A R , A L indicate the amplitude projection over RCP and LCP states. As can be seen in Figure 3d, the parameter matrix calculated by combining the E x ‐ and E y ‐components indicates that the measurement results are in good agreement with the simulation results.…”

Section: Resultsmentioning

confidence: 99%

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Polarization Detection of Terahertz Waves using All‐Silicon Metasurfaces with Tightly Focusing Behavior

Zheng

Duan

et al. 2023

Laser & Photonics Reviews

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The manipulation of polarization states is reflected in the tailoring of light–matter interactions and has great applications in fundamental science. Nevertheless, the conventional polarization‐separated detection behavior in the terahertz (THz) band is very challenging when applied to visualize the incident polarization state since its measurement requires sophisticated instrumentation. Here, the feasibility of its reconstruction of the full‐Stokes parameter matrix in the THz band is explored by establishing an all‐silicon decoupled metasurface based on the polarization multiplexing encoding technique. The pixelated focal spots gathered in the target plane allow us to employ more elaborate methods to extract the characteristic parameters of the incident polarization states. The resolvability of the THz polarization detection behavior with a single focal spot is further optimized benefiting from the longitudinal polarization component (Ez) generated by the tightly focused beam in the propagation direction. The capability of the Ez‐component in determining the key parameters that compose the polarization ellipse is evaluated by predefining the random incident polarization on a standard Poincaré sphere. Thus, the proposed scheme offers significant advantages in future THz communications, providing opportunities for ultra‐compact, high‐resolution full‐Stokes polarization imaging and multidimensional information processing.

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\begin{equation}{S_0} = A_x^2 + A_y^2\end{equation}

\begin{equation}{S_1} = A_x^2 - A_y^2\end{equation}

\begin{equation}{S_2} = 2{A_x}{A_y}\cos \left( {{\delta _1} - {\delta _2}} \right) = A_{{{45}^ \circ }}^2 - A_{{{135}^ \circ }}^2\end{equation}

\begin{equation}{S_3} = 2{A_x}{A_y}\sin \left( {{\delta _1} - {\delta _2}} \right) = A_{\mathrm{R}}^2 - A_{\mathrm{L}}^2\end{equation}

Section: Resultsmentioning

confidence: 99%

“…Subsequently, we obtained the measurement results for different polarization component at the focal plane separately using the standard algorithm. The function employed to reconstruct the full-Stokes parameter matrix S = [S 0 , S 1 , S 2 , S 3 ] T at the target pixel spots is modified to that [20,44]…”

Section: Resultsmentioning

confidence: 99%

Polarization Detection of Terahertz Waves using All‐Silicon Metasurfaces with Tightly Focusing Behavior

Zheng

Duan

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…Polarimetry can also be demonstrated with the design of plasmonic meta-gratings 15,16 , yet the reflection/diffraction mode makes it challenging for direct integration on sensors. Similar to the division of focal plane, researchers design a metalens array (usually consisting three to six metalenses) to split and focus light in different polarization bases for estimating the full Stokes vectors [17][18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Neural network assisted high-spatial-resolution polarimetry with non-interleaved chiral metasurfaces

Chen

Xiao

et al. 2023

Preprint

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Polarimetry plays an indispensable role in modern optics. Nevertheless, the current strategies generally suffer from bulky system volume or spatial multiplexing scheme, resulting in limited performances when dealing with inhomogeneous polarizations. Here, we propose a non-interleaved, interferometric method to analyze the polarizations based on a tri-channel chiral metasurface. A deep convolutional neural network is also incorporated to enable fast, robust and accurate polarimetry. Spatially uniform and non-uniform polarizations are both measured through the metasurface experimentally. Distinction between two semblable glasses are also demonstrated. Our strategy features the merits of compactness and high spatial resolution, and would inspire more intriguing design for detecting and sensing.

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“…[19][20][21][22][23][24][25][26] To overcome the limitations associated with the 50% energy efficiency constraint imposed by traditional methods, polarization-sensitive metalenses based on birefringence elements have been proposed to split and focus the orthogonal polarization states at different positions on the imaging sensor. [27][28][29] Sun et al demonstrated a maximum energy efficiency of 81.8% using an all-dielectric spatial multiplexing metalens design. [30] In 2019, Rubin et al introduced a compact full-Stokes polarization metasurface utilizing diffraction gratings that can efficiently diffract distinct polarization states onto separate diffraction orders exceeding 50% efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Tunable Far‐Infrared Polarization Imaging Based on VO₂ Metasurfaces

Ma,

Kang,

et al. 2023

Advanced Optical Materials

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Polarization imaging enables the capture of material properties and surface characteristics of objects, finding applications in remote sensing and defense. However, most existing polarization imaging systems rely on polarization filtering elements, resulting in energy loss exceeding 50% and compromising intensity imaging performance. Conventionally, a rotary device equipped with different polarizers and a blank area is used to acquire both polarization and intensity images, which is cumbersome for integration and miniaturization purposes. In this study, a miniaturized and easily integrated active metasurface based on VO2 grating structure for switchable detection of intensity and polarization in the far‐infrared band (8–14 µm) is proposed. With VO2 in the dielectric state, the device exhibits high transmittance for both TE‐ and TM‐polarized light (Experimental transmittance of up to 65%). Upon phase transition to the metallic state, the device demonstrates low transmittance for TE‐polarized light while maintaining high transmittance for TM‐polarized light (linear polarization extinction ratio up to 10 dB). Finally, the tunable thermal intensity and polarization imaging capabilities of the custom‐made setup are characterized. The metasurface showcases comparable performance to standard commercial polarizers in terms of polarization imaging. The developed tunable far‐infrared polarization imaging system holds promise for next‐generation multidimensional information perception.

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Mid-infrared full-Stokes polarization detection based on dielectric metasurfaces

Cited by 10 publications

References 36 publications

Polarization Detection of Terahertz Waves using All‐Silicon Metasurfaces with Tightly Focusing Behavior

Polarization Detection of Terahertz Waves using All‐Silicon Metasurfaces with Tightly Focusing Behavior

Neural network assisted high-spatial-resolution polarimetry with non-interleaved chiral metasurfaces

Tunable Far‐Infrared Polarization Imaging Based on VO₂ Metasurfaces

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Mid-infrared full-Stokes polarization detection based on dielectric metasurfaces

Cited by 10 publications

References 36 publications

Polarization Detection of Terahertz Waves using All‐Silicon Metasurfaces with Tightly Focusing Behavior

Polarization Detection of Terahertz Waves using All‐Silicon Metasurfaces with Tightly Focusing Behavior

Neural network assisted high-spatial-resolution polarimetry with non-interleaved chiral metasurfaces

Tunable Far‐Infrared Polarization Imaging Based on VO2 Metasurfaces

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Tunable Far‐Infrared Polarization Imaging Based on VO₂ Metasurfaces