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An improved design and simplified evaluation technique for waveguide microcalorimeter is presented in this paper. The design is based on a traditional twin-line microcalorimeter for calibrating thermistor mounts but with a proposed novel modification. In the improved design, another thermistor is added to measure the temperature change of the thermal isolation waveguide section. A simplified evaluation...
This paper reports an evaluation of phase uncertainty in scattering parameter (S-parameter) measurements. Methods of Law of Propagation of Uncertainty and Coordinate Rotation have been used to transform uncertainty information of the real and imaginary components in a complex-valued S-parameter to its phase. Practical evaluations with measurements were carried out to check the consistency between...
A III-nitride-based Quantum Cascade detector grown by MOCVD is designed, fabricated and tested. Peak responsivity of 100 µA/W with detectivity of up to 108 Jones at ∼ 4 µm is measured.
The Photoluminescence spectra and lifetime of Fe2+ doped ZnSe crystal with quantum cascade laser pumping is measured. At room temperature the photoluminescence lifetime is ∼ 0.38 μs, which increases to ∼ 100 μs at 80K.
This paper describes a bilateral comparison between two national metrology institutes, NMC, A*STAR from Singapore and INRIM from Italy, concerning scattering parameter measurements with WR15 (50 to 75 GHz) and WR10 (75 to 110 GHz) waveguides.
Room temperature photoluminescence in Fe:ZnSe is observed under near-absorption-edge Quantum Cascade Laser (QCL) pumping. Both the spectral characteristics (λpeak ≈ 4.7 μm) and the luminescence lifetime (τ ≈ 0.38 us) are measured.
Previous research showed that satisfaction with one or more environmental factor does not necessarily produce equal satisfaction with the total environment and not all factors are equally important. In addition, the relative importance of the various factors differed from country to country. In order to gain a better understanding of the influential factors of office environmental satisfaction in...
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