Puscasu, I., & Boreman, G. D. (2001). Theoretical and experimental analysis of transmission and enchanced absorption of frequency selective surfaces in the infrared. In Proc. SPIE (Vol. 4293, pp. 185–190).
Abstract: A comparative study between theory and experiment is presented for transmission through lossy frequency selective surfaces (FSSs) on silicon in the 2 – 15 micrometer range. Important parameters controlling the resonance shape and location are identified: dipole length, spacing, impedance, and dielectric surroundings. Their separate influence is exhibited. The primary resonance mechanism of FSSs is the resonance of the individual metallic patches. There is no discernable resonance arising from a feed-coupled configuration. The real part of the element's impedance controls the minimum value of transmission, while scarcely affecting its location. Varying the imaginary part shifts the location of resonance, while only slightly changing the minimum value of transmission. With such fine-tuning, it is possible to make a good fit between theory and experiment near the dipole resonance on any sample. A fixed choice of impedance can provide a reasonable fit to all samples fabricated under the same conditions. The dielectric surroundings change the resonance wavelength of the FSS compared to its value in air. The presence of FSS on the substrate increases the absorptivity/emissivity of the surface in a resonant way. Such enhancement is shown for dipole and cross arrays at several wavelengths.
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Semenov, A., Goltsman, G., & Korneev, A. (2001). Quantum detection by current carrying superconducting film. Phys. C: Supercond., 351(4), 349–356.
Abstract: We describe a novel quantum detection mechanism in the superconducting film carrying supercurrent. The mechanism incorporates growing normal domain and breaking of superconductivity by the bias current. A single photon absorbed in the film creates transient normal spot that causes redistribution of the current and, consequently, increase of the current density in superconducting areas. When the current density exceeds the critical value, the film switches into resistive state and generates the voltage pulse. Analysis shows that a submicron-wide film of conventional low temperature superconductor operated in liquid helium may detect single far-infrared photon. The amplitude and duration of the voltage pulse are in the millivolt and picosecond range, respectively. The quantitative model is presented that allows simulation of the detector utilizing this detection mechanism.
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Shelkovnikov, A., Grain, C., Nguyen, C. T., Butcher, R. J., Amy-Klein, A., & Chardonnet, C. (2001). 500-Hz two-photon Ramsey fringes with a SF6 beam: towards a new frequency standard in the 30-THz spectral region. Appl. Phys. B: Lasers and Optics, 73, 93–98.
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Shi, S. C., Chin, C. C., Wang, M. J., Shan, W. L., Zhang, W., & Noguchi, T. (2001). Development of a 600–720 GHz SIS Mixer for the SMART. In C. Iit.u.t.e of T. Jet Propulsion Laboratory (Ed.), Proc. 12th Int. Symp. Space Terahertz Technol. (215). San Diego, CA, USA.
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Shitov, S. V., Levitchev, M., Veretennikov, A. V., Koshelets, V. P., Prokopenko, G. V., Filippenko, L. V., et al. (2001). Superconducting integrated receiver as 400-600 GHz tester for coolable devices. IEEE Trans. Appl. Supercond., 11(1), 832–835.
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