Scanning Fabry-Perot filter for terahertz spectroscopy based on silicon dielectric mirrors

Cleary, Justin W.; Fredricksen, Christopher J.; Muravjov, A. V.; Enz, Jasen; Dolguikh, M. V.; Bosq, Todd W. Du; Peale, Robert E.; Folks, William R.; Pandey, Sidhartha K.; Boreman, Glenn D.; Edwards, Oliver

doi:10.1117/12.700718

Cited by 1 publication

(4 citation statements)

References 28 publications

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“…For an FPI composed of two parallel metallic meshes, its transmission function can be obtained by Airy formula and expressed as follows [2,6]:…”

Section: Theory Of Fabry-perot Interferometermentioning

confidence: 99%

“…where T FPI is the spectral transmittance of FPI, T m , R m , and A m are the spectral transmittance, reflectance and absorbance respectively for a single metallic mesh, δ is the phase difference of two interference beams for a Fabry-Perot cavity with thickness d and refractive index n, and expressed as [2,6]:…”

Section: Theory Of Fabry-perot Interferometermentioning

confidence: 99%

“…In recent years, terahertz technologies attract more and more attention in science and industry. Terahertz filters and terahertz Fabry-Perot interferometers (FPI) are important instruments and widely used in many terahertz applications [1][2][3][4][5][6][7][8][9]. Metallic meshes are especially preferred as reflectors of this kind of filters and Fabry-Perot interferometers for their high reflectance, low absorbance, compact size, and no restriction on spectral range [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…High reflectance of metallic meshes is needed to achieve high finesse and high resolution for this kind of filters or FPI [2,5,9]. However, traditional metallic meshes with period from several decades to several thousands of micrometers fail to achieve high reflectance at terahertz frequencies, because the period is not far less than the applied wavelengths.…”

Section: Introductionmentioning

confidence: 99%

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Terahertz Fabry-Perot Interferometer Constructed by Metallic Meshes with Micrometer Period and High Ratio of Linewidth/Period

Tan

Fan

2010

KEM

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The possibility of constructing terahertz Fabry-Perot interferometer using metallic meshes with micrometer period and high ratio of linewidth/period is investigated, and the effectivity of traditional equivalent circuit method is verified by FDTD method. Simulation shows that the reflectance and transmittance of this kind of meshes calculated by equivalent circuit method have considerable deviation from those obtained by vector analysis of FDTD, so equivalent circuit method can be used to roughly evaluate the properties of this kind of metallic meshes. By using a metallic mesh with the period of 5 micrometers and the ratio of linewidth/period of 0.8, a finesse larger than 1100 can be achieved while the peak transmittance is still larger than 0.2 for a Fabry-Perot interferometer. It is therefore concluded that a high-quality terahertz Fabry-Perot interferometer can be constructed by using metallic meshes with micrometer period and high ratio of linewidth/period.

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“…For an FPI composed of two parallel metallic meshes, its transmission function can be obtained by Airy formula and expressed as follows [2,6]:…”

Section: Theory Of Fabry-perot Interferometermentioning

confidence: 99%

Section: Theory Of Fabry-perot Interferometermentioning

confidence: 99%