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Design and fabrication of planar multilayer structures with coherent thermal emission characteristics
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10.1063/1.2349472
/content/aip/journal/jap/100/6/10.1063/1.2349472
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/6/10.1063/1.2349472
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematics of the proposed coherent emission sources: (a) a PC-on-SiC structure made of a 1D PC with few unit cells coated on the SiC wafer. The unit cell of the 1D PC is composed of a dielectric type on both sides of a dielectric type with a total thickness of , where . The thickness determines the surface termination of the PC adjacent to the SiC wafer. (b) Asymmetric Fabry-Pérot resonance cavity made of a film with Ag coatings on both sides. The thickness of the Ag layer located on the left is , and that on the right is assumed to be semi-infinite.

Image of FIG. 2.
FIG. 2.

(Color online) Characteristics of PCs of finite numbers of periods: (a) reflectance spectra in the vicinity of the stop band. The solid line stands for the case when , i.e., five unit cells, and the dotted line is for the case with . The stop band of the semi-infinite 1D PC is represented by the shaded region. (b) The square of the electric field, normalized by that of the incident wave, inside the PC for at normal incidence. The upper panel is for the case of (stop band), and the lower panel is for (passband).

Image of FIG. 3.
FIG. 3.

(Color online) The spectral-directional emissivity of the PC-on-SiC structure at normal incidence (solid line). The parameters of the 1D PC are , , , and . The dotted line represents the emissivity of a bulk SiC wafer without the 1D PC.

Image of FIG. 4.
FIG. 4.

(Color online) The emissivity of the PC-on-Ag structure: (a) spectral emissivity at , 30°, and 60° for TE waves (solid lines) and TM waves (dotted lines). Here, , , , and . (b) Angular distribution of the emissivity at three peak frequencies for TE waves. The emissivity peaks corresponding to emission angles of , 30°, and 60° are centered at , 10 718, and , respectively.

Image of FIG. 5.
FIG. 5.

(Color online) The square of the electric field, normalized by that of the incidence, inside the PC-on-Ag structure. The upper panel represents the case when a surface wave is excited, and the lower panel is for the case without a surface wave.

Image of FIG. 6.
FIG. 6.

(Color online) Illustration of the Fresnel reflection and transmission coefficients at the boundaries of the Fabry-Pérot resonator.

Image of FIG. 7.
FIG. 7.

(Color online) The emissivity of the Fabry-Pérot cavity: (a) spectral emissivity at normal incidence (solid line). The thickness of the cavity is , and that of thin Ag film is . The dotted line represents the case without a front Ag film. (b) Angular distribution of the emissivity at three peak frequencies for TM waves. The emissivity peaks corresponding to emission angles of , 30°, and 60° are centered at , 5284.0, and , respectively.

Image of FIG. 8.
FIG. 8.

(Color online) Spectral reflectance of the fabricated PC-on-Ag structure in the near-IR spectral region at room temperature. The solid and dashed lines represent the measured and predicted reflectance, respectively. The reflectance was measured by using the FTIR spectrometer with the resolution of at the angle of incidence 10°.

Image of FIG. 9.
FIG. 9.

(Color online) Spectral reflectance of the fabricated Fabry-Pérot cavity in the near-IR spectral region at room temperature. The solid and dashed lines represent the measured and predicted reflectance, respectively.

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/content/aip/journal/jap/100/6/10.1063/1.2349472
2006-09-28
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Design and fabrication of planar multilayer structures with coherent thermal emission characteristics
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/6/10.1063/1.2349472
10.1063/1.2349472
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