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  • Guo, Sijia  (9)
  • Zhang, Haifeng  (9)
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  • 1
    Online Resource
    Online Resource
    Analysis of the features of a multifunctional device based on the regulation of the magnetic field in one-dimensional photonic crystals containing only plasma with a novel quasi-periodic structure
    Optica Publishing Group ; 2020
    In:  Journal of the Optical Society of America B Vol. 37, No. 7 ( 2020-07-01), p. 1996-
    Details
    In: Journal of the Optical Society of America B, Optica Publishing Group, Vol. 37, No. 7 ( 2020-07-01), p. 1996-
    Abstract: In this paper, the features of a multifunctional device that are realized by one-dimensional magnetized plasma photonic crystals (MPPCs) containing only the plasma regulated by the external magnetic field in an innovative quasi-periodic arrangement are studied by the transfer matrix method, which possesses the characteristics of the omnidirectional bandgap (OBG), nonreciprocity (NR), and polarization separation (PS). The effects of the magnetic field and other physical parameters including the plasma frequency and incident angle on those three properties are illustrated, respectively. The computed results demonstrate that, with the gradually increasing magnetic field, the performances of OBG and NR apparently deteriorate while the PS region expands ideally. Meanwhile, the greater presentations of OBG and PS can be gotten with the proper rise of the plasma frequency. Nevertheless, the higher the plasma frequency is, the worse the quality of NR will be observed. Furthermore, an appropriate incident angle also plays a crucial part in the display of NR and PS for the proposed structure, and these properties can be enhanced well with a larger incident angle. This new kind of MPPC has potential application in designing tunable and multifunctional optical instruments.
    Type of Medium: Online Resource
    ISSN: 0740-3224 , 1520-8540
    URL: Article
    DOI: 10.1364/JOSAB.392047
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2020
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  • 2
    Online Resource
    Online Resource
    Unidirectional ultrabroadband and wide-angle absorption in graphene-embedded photonic crystals with the cascading structure comprising the Octonacci sequence
    Optica Publishing Group ; 2020
    In:  Journal of the Optical Society of America B Vol. 37, No. 9 ( 2020-09-01), p. 2678-
    Details
    In: Journal of the Optical Society of America B, Optica Publishing Group, Vol. 37, No. 9 ( 2020-09-01), p. 2678-
    Abstract: Using the transfer matrix method, a unidirectional absorber with an ultrabroadband absorption bandwidth and angular stability is realized in the graphene-embedded photonic crystals (GPCs) arranged by the cascading structure formed with the periodic sequence and the quasi-periodic Octonacci sequence in the terahertz regime. As a result, the surface conductivity of the graphene sheet can be modulated via the chemical potential, and the characteristics of the proposed absorber are tunable. Compared to the structure spliced by the diverse periodic sequences, the relative absorption bandwidth of the proposed composite construction is up to 94.53%, which far outweighs that of the periodic one. We compare the Octonacci sequence, the Fibonacci sequence, and the Thue–Morse sequence, and the calculated results reveal the advantage of the Octonacci sequence in the expansion of the absorption bandwidth. Under the optimization of the related parameters, the incident wave is primarily reflected in the forward propagation and absorbed in a wide range of θ under the TM mode in backward propagation, which shows the splendid unidirectionality and angular stability. The impacts of the chemical potential, structural thicknesses, and stack numbers on the absorption properties are also investigated in detail. Additionally, the impedance match theory and the interference field theory are introduced to explain the intrinsic absorption mechanism of the presented GPCs. In short, the unidirectional broadband and angle-insensitive absorber has extensive application prospects in optical sensing, optical filtering, photodetection, and solar energy collection.
    Type of Medium: Online Resource
    ISSN: 0740-3224 , 1520-8540
    URL: Article
    DOI: 10.1364/JOSAB.399048
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2020
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Synthesis and characterization of Cr-doped WO3 nanofibers for conductometric sensors with high xylene sensitivity
    Elsevier BV ; 2018
    In:  Sensors and Actuators B: Chemical Vol. 265 ( 2018-07), p. 355-364
    Details
    In: Sensors and Actuators B: Chemical, Elsevier BV, Vol. 265 ( 2018-07), p. 355-364
    Type of Medium: Online Resource
    ISSN: 0925-4005
    URL: Article
    DOI: 10.1016/j.snb.2018.03.054
    RVK:
    ZG 1100
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2018
    detail.hit.zdb_id: 1500731-5
    detail.hit.zdb_id: 1021505-0
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  • 4
    Online Resource
    Online Resource
    The wide-angle broadband absorption and polarization separation in the one-dimensional magnetized ferrite photonic crystals arranged by the Dodecanacci sequence under the transverse magnetization configuration
    IOP Publishing ; 2021
    In:  Journal of Physics D: Applied Physics Vol. 54, No. 1 ( 2021-01-07), p. 015004-
    Details
    In: Journal of Physics D: Applied Physics, IOP Publishing, Vol. 54, No. 1 ( 2021-01-07), p. 015004-
    Abstract: Utilizing the transfer matrix method, a multifunctional infrared device possessing the properties of the wide-angle broadband absorption and the polarization separation based on the one-dimensional (1-D) magnetized ferrite photonic crystals (MFPCs) arranged by the Dodecanacci sequence is designed theoretically under the modulation of the external magnetic field. The magneto-optical effect generated in the proposed MFPCs gives birth to the ultra-broadband absorption regions under the transverse electric (TE) mode, one runs at 16.22 THz –30.89 THz and the other covers at 33.52 THz–70.00 THz. The mechanism of the wide-angle (at most 80.89° for TE mode) absorption is analyzed by the interference cancellation condition. Moreover, owing to the different effective permeabilities of the MFPCs under the two polarization modes, the propagation behaviors of the electromagnetic (EM) wave are diverse which present the absorption features under the TE mode and show the transmission properties under the transverse magnetic (TM) mode in the structure. Compared with the periodic and Thue-Morse structures, the complex symmetry of the Dodecanacci sequence makes the absorption features of the MFPCs superior to that of the former. Besides, the influences of the magnetic field intensity and the dielectrics’ thicknesses on the angle-insensitive absorption and polarization separation characteristics are discussed explicitly. This research provides meaningful guidance for the modulation and absorption of the infrared light wave and the design of the multifunctional magnetically tunable optoelectric device.
    Type of Medium: Online Resource
    ISSN: 0022-3727 , 1361-6463
    URL: Article
    DOI: 10.1088/1361-6463/abb976
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 209221-9
    detail.hit.zdb_id: 1472948-9
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  • 5
    Online Resource
    Online Resource
    Ultra-wide unidirectional infrared absorber based on 1D gyromagnetic photonic crystals concatenated with general Fibonacci quasi-periodic structure in transverse magnetization
    IOP Publishing ; 2020
    In:  Journal of Optics Vol. 22, No. 10 ( 2020-10-01), p. 105101-
    Details
    In: Journal of Optics, IOP Publishing, Vol. 22, No. 10 ( 2020-10-01), p. 105101-
    Type of Medium: Online Resource
    ISSN: 2040-8978 , 2040-8986
    URL: Article
    DOI: 10.1088/2040-8986/abad09
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2532144-4
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  • 6
    Online Resource
    Online Resource
    Non-reciprocity in the spin Hall effect based on multilayer magnetized plasma
    Optica Publishing Group ; 2021
    In:  Applied Optics Vol. 60, No. 7 ( 2021-03-01), p. 1834-
    Details
    In: Applied Optics, Optica Publishing Group, Vol. 60, No. 7 ( 2021-03-01), p. 1834-
    Abstract: The phenomenon of non-reciprocity in the spin Hall effect of light (SHEL) is studied in this paper. The proposed structure is composed of a glass layer, multilayer magnetized plasma layers, and an air layer. The multilayer magnetized plasma layers are arranged in accordance with the fifth Fibonacci sequence. The simulated results demonstrate that ω p a , ω p b (plasma frequencies of magnetized plasma for layers A and B), f (the frequency of the incident light), and the number of the magnetized plasma layers affect the behavior of non-reciprocity in the SHEL. The computed results also show that with the enhancement of ω p a , ω p b , and f , the phenomenon of non-reciprocity will be more obvious, evident by the distinct difference between the forward and backward incidence. However, the increase in the number of magnetized plasma layers has the effect of limiting the advantages of non-reciprocity in the SHEL. Those results demonstrate that the difference of δ H (horizontal displacements) between the forward and backward incidence in the third sequence is 6 times greater than that in the fourth sequence, and the difference of δ H in the fourth sequence is bigger than that in the fifth sequence. Through these findings, the non-reciprocity in the SHEL will be better understood and they will be of help in the development of optical isolators and non-reciprocal sensors.
    Type of Medium: Online Resource
    ISSN: 1559-128X , 2155-3165
    URL: Article
    DOI: 10.1364/AO.410627
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2021
    detail.hit.zdb_id: 207387-0
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  • 7
    Online Resource
    Online Resource
    Theoretical investigation on the properties of polarization selection and asymmetric absorption for the ITO nanowire material
    Optica Publishing Group ; 2020
    In:  Journal of the Optical Society of America B Vol. 37, No. 10 ( 2020-10-01), p. 3126-
    Details
    In: Journal of the Optical Society of America B, Optica Publishing Group, Vol. 37, No. 10 ( 2020-10-01), p. 3126-
    Abstract: In this paper, the features of the polarization selection and broadband asymmetric absorption based on the indium tin oxide (ITO) nanowire are studied theoretically. Only two layers of ITO material are introduced into our design, and such a structure is relatively simple. For a single-layer ITO nanowire structure, supposing the incident wave is the transverse electric (TE) wave, characteristics of high absorption can be found only in the case of epsilon-near-zero (ENZ). However, for the transverse magnetic (TM) wave, provided that the angle of incidence is greater than 10°, high absorption will be generated in the cases of ENZ and epsilon-near-pole. This also leads to the absorption bandwidth of the TM wave to be wider than that of the TE one. At some certain frequencies, the absorption rate for the TE wave is low, while for the TM wave, the absorption rate is very high, resulting in the polarization selection. For the presented double-layer structure of ITO material, the reasonable adjustment of the filling factors will produce obvious asymmetric absorption in forward and backward incidence for TE and TM waves, and the TE wave will always maintain a larger range of contrast D value higher than 0.9 than that of the TM one.
    Type of Medium: Online Resource
    ISSN: 0740-3224 , 1520-8540
    URL: Article
    DOI: 10.1364/JOSAB.401954
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2020
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  • 8
    Online Resource
    Online Resource
    Investigation on temperature controlling multifunctional selector in superconducting photonic crystals based on Thue–Morse sequence
    Optica Publishing Group ; 2020
    In:  Journal of the Optical Society of America B Vol. 37, No. 6 ( 2020-06-01), p. 1829-
    Details
    In: Journal of the Optical Society of America B, Optica Publishing Group, Vol. 37, No. 6 ( 2020-06-01), p. 1829-
    Abstract: In this paper, a novel one-dimensional superconducting photonic crystal exploiting the Thue–Morse arrangement is theoretically investigated by the transfer matrix method. Two transmission states are switched in utilization of ambient temperature in the case of the same structure in the terahertz regime: one is the omnidirectional photonic bandgap (OBG) characteristics in low-temperature zones (about 10 K), and the other is wide-angle broadband absorption characteristics in high-temperature zones (about 90 K). Due to the modulation of temperature-dependent superconducting complex permittivity, the proposed structure can induce the OBG and broadband absorption at different temperatures. From the numerical results, the OBG can be notably tuned by manipulating the structural parameter of high refractive index dielectric. The effects of superconducting thickness on the switchable function regions are also considered. The proposed structure can possess both environment stable zero- n ¯ OBG at 10 K and preeminent broadband absorption in the TM polarization at 90 K, which offers theoretical guidance to the design of temperature switchable function selectors.
    Type of Medium: Online Resource
    ISSN: 0740-3224 , 1520-8540
    URL: Article
    DOI: 10.1364/JOSAB.389349
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2020
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  • 9
    Online Resource
    Online Resource
    Goos–Hänchen shift produced by a one-dimensional photonic crystal doped with InSb
    Optica Publishing Group ; 2020
    In:  Journal of the Optical Society of America B Vol. 37, No. 7 ( 2020-07-01), p. 2095-
    Details
    In: Journal of the Optical Society of America B, Optica Publishing Group, Vol. 37, No. 7 ( 2020-07-01), p. 2095-
    Abstract: In this paper, a novel kind of one-dimensional (1D) photonic crystal (PC) doped with indium antimonide (InSb) is proposed, which is theoretically investigated by the transfer matrix method to create a giant lateral shift that is also called the Goos–Hänchen (GH) shift. The transmittance features of the proposed PCs are ascribed to the temperature. The influences of the incident angle on the transmittance of TE and TM waves have also been studied in the theory. For the TE wave, the transmittance is also affected by magnetic field strength, due to the characteristics of the permittivity of InSb layers. Therefore, for the TE wave, such PCs not only can generate huge positive and negative GH displacements but also can produce some regular changes under the effects of temperature and external magnetic field. The calculated results demonstrate that the normalized positive GH shift can reach around 55 times the wavelength, and the normalized negative one can get to around 182 times the wavelength. When the angle of incidence is large or small, the resulting GH shift will also produce interesting changes. These 1D PCs may provide a theoretical possibility for some devices that detect changes in temperature or magnetic field strength, or may be applied to angle sensors.
    Type of Medium: Online Resource
    ISSN: 0740-3224 , 1520-8540
    URL: Article
    DOI: 10.1364/JOSAB.393392
    Language: English
    Publisher: Optica Publishing Group
    Publication Date: 2020
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