Broadband terahertz half-wave plate based on anisotropic polarization conversion metamaterials

Xia, Rui; Jing, Xufeng; Gui, Xincui; Tian, Ying; Hong, Zhi

doi:10.1364/ome.7.000977

Cited by 165 publications

(45 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metamaterials are artificial composite structural materials that have some usual physical characteristics, which are different from natural materials . The peculiar performances of metamaterials depend not only on the media itself, but also on the design of subwavelength microstructure or nanostructure . Thus, metamaterials have attracted wide attention in recent 10 years in the field of miniaturization antenna, super resolution imaging, high sensitive detector, electromagnetic wave absorber, electromagnetic invisibility, and so on .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10] The peculiar performances of metamaterials depend not only on the media itself, but also on the design of subwavelength microstructure or nanostructure. [11][12][13][14][15][16][17][18][19][20] Thus, metamaterials have attracted wide attention in recent 10 years in the field of miniaturization antenna, super resolution imaging, high sensitive detector, electromagnetic wave absorber, electromagnetic invisibility, and so on. 21,22 Particularly, metamaterial absorbers have an important role in all sorts of applications, including imaging, detection, solar cell, and stealth technology.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure

Fang

Peng

et al. 2019

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

We propose a multiband metamaterial absorber consisting of silicon brick array on metal substrate in infrared range. Using the regular hexagon array of silicon bricks, the absorption rate can reach to 90% over the bandwidth of 100 nm, and four absorption peaks with the absorption rate of more than 98% can be obtained. The absorber is independent on polarization angle. The multiband absorption performance can be attributed to primary cavity mode and Mie resonance in silicon bricks. Importantly, when the all‐dielectric silicon bricks are replaced by metal‐dielectric‐metal sandwich structure, the absorption rate above 75% with the bandwidth of more than 200 nm in the absorber can be realized, and it is polarization‐insensitive. The absorption peaks are increased to obtain broadband absorption. Our designed sandwich microstructure can generate the resonance effect of magnetic dipole among coupled layers, leading to the characteristics of broadband absorption.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure

Fang

Peng

et al. 2019

Micro & Optical Tech Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…Such problem can be resolved using metasurfaces, which enables to properly optimize the dimensions of the structure through which electromagnetic properties can be tailored artificially. The transmission or reflection amplitude, direction of wave propagation, dispersion characteristics, and state of wave polarization may be artificially manipulated . The metasurface can provide large anisotropy due to its strong resonant response which helps in reducing the thickness of the structural design to large extent .…”

Section: Introductionmentioning

confidence: 99%

“…The transmission or reflection amplitude, direction of wave propagation, dispersion characteristics, and state of wave polarization may be artificially manipulated. [5][6][7][8][9] The metasurface can provide large anisotropy due to its strong resonant response which helps in reducing the thickness of the structural design to large extent. 10 Among various polarization conversion devices, linear polarization converter is significantly used.…”

Section: Introductionmentioning

confidence: 99%

A metasurface‐based broadband quasi nondispersive cross polarization converter for far infrared region

Nilotpal

Nama

Bhattacharyya

et al. 2019

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

A broadband nondispersive cross polarization converter (CPC) structure using metasurface for far infrared region has been proposed in this article. The structure is transmittive in nature, which converts a linearly polarized incident wave to its mutually orthogonal linearly polarized wave over a band of frequency ranging from 10.25 to 22.7 THz maintaining a high polarization conversion ratio (PCR) of more than 0.95. The fractional bandwidth of 75.6% corresponding to the center frequency of PCR bandwidth having more than 0.9 PCR value has been realized. The structure is also studied for oblique incidences where it shows wide band polarization conversion up to 45° for both TE and TM polarized oblique incident waves. The electric field distributions at the top and bottom surfaces of the structure close to the center frequency of polarization conversion bandwidth indicate the orthogonal rotation of incident linearly polarized wave at the frequency of interest. For the given set of media interface a separate study on polarization conversion through Brewster angle concept has been carried out simultaneously. The structure exhibits high PCR by maintaining the compactness in thickness (~ λ/5) as well as periodicity (~ λ/3) compared to the existing reported ones.

show abstract

“…However, these methods normally result in the narrowband operations and bulky configurations. Recently developed metamaterials and metasurfaces 17,18 which exhibit exotic EM properties not found in nature, have attracted significant interest in the development of polarization converters, [19][20][21][22][23][24] resulting in numerous reflective and transmissive polarization converters with much reduced thicknesses. The recent developments aim at the realization of both the wide polarization conversion bandwidth and the high polarization conversion ratio (PCR), such as the microwave reflective metasurfaces, [2][3][4] gold helix structures in optics, 17 the planar ultrathin plasmonic metasurfaces at THz frequency, 11,[19][20][21][22] and other approaches.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency cross and linear‐to‐circular polarization converters based on novel frequency selective surfaces

Wang

Lin

et al. 2019

Micro & Optical Tech Letters

View full text Add to dashboard Cite

Most high‐efficiency polarization converters in literatures are based on reflective structures. Here we report the designs and experiments of high‐efficiency transmissive polarization converters using novel compact frequency‐selective surfaces (FSSs). By combining the common dipole and square ring based band‐pass FSSs, a novel FSS can be generated, whose high‐efficiency pass bands and transmissive phases for two orthogonal polarizations can be tuned by changing the dimensions of the FSS structure. As demonstrations of the concept, a transmissive cross polarization converter (a half‐wave plate) and a transmissive linear‐to‐circular polarization (LP‐CP) converter (a quarter‐wave plate) are designed and tested, respectively. Simulated results show that the polarization conversion ratio over 90% for the transmissive cross‐polarization converter is from 18.5 to 23.5 GHz, about 23.8%, and the 3‐dB LP‐CP conversion bandwidth is 19.6%. Experiments are carried out to validate both designs.

show abstract

Broadband terahertz half-wave plate based on anisotropic polarization conversion metamaterials

Cited by 165 publications

References 25 publications

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure

Polarization‐independent multiband metamaterials absorber by fundamental cavity mode of multilayer microstructure

A metasurface‐based broadband quasi nondispersive cross polarization converter for far infrared region

High‐efficiency cross and linear‐to‐circular polarization converters based on novel frequency selective surfaces

Contact Info

Product

Resources

About