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Articles you may be interested inHigh resolution InSb quantum well ballistic nanosensors for room temperature applications AIP Conf.Polarized oscillatory magnetoabsorption spectra of exciton formation transitions in InSb have been measured under high resolution at liquid helium temperature. An un strained high-mobility sample 5 JI. thick and magnetic fields up to 39.1 kgauss were used. Diffraction grating dispersion for the region 3.7 <>-<6.0 JI. made possible a resolution of 1-7XlO-4 ev and the determination of absorption maxima to ±5XI0-' ev. Sixteen minima were resolved with E.lB for a field of only 5.0 kgauss. The initial interpretation of the detailed spectra obtained involved fitting theoretical spectra calculated from the theories of Kane, Luttinger, and Elliott-Loudon in order to account for band nonparabolicities, valence band degeneracy effects, and exciton binding energies, respectively. The results experimentally established the light-hole nonparabolicity, the valence band degeneracy effects for low magnetic quantum numbers, and the existence of high-field excitons in InSb.

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Advanced aircraft and spacecraft will require fiber -optic sensor systems to monitor the environment around the platform as well as the structural integrity of the vehicle itself. These sensors when embedded in composite or metal matrix material can also be used to monitor the manufacturing process. Thus, this technology provides a means to sense key environmental parameters from the creation of parts, through assembly, test and flight for the life of the platform.