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Presents information on a study which performed Brillouin scattering spectroscopy (BSS) measurements on single-crystal transition-metal nitride superlattices and mismatched superlattices. Description of BSS measurements conducted; Results of x-ray diffraction analysis; Surface wave velocity for superlattices.

Presents a study which determined the elastic constants of single-crystal NbN, VN, and TiN films from surface acoustics wave dispersion curves. Way in which wave dispersion curves were obtained; Functions of the angle of propagation; Role of a modified simplex method.

In linear arrays of optically probed bismuth-doped iron garnet films, the Faraday rotation signal produced by an external magnetic field is a complex function of film shapes, stacking geometries, optical path length, and insertion losses. Studies of arrayed responsivities under various configurations reveal a proximity coupling effect between ferromagnetic domains of adjacent films, which enhances Faraday rotation by minimizing demagnetization effects at the interfaces. The effect is activated by matching ferromagnetic domain patterns in adjacent films and has resulted in over a twofold improvement in detection sensitivities when the arrays were configured as polarimetric magneto-optic sensors. [ABSTRACT FROM AUTHOR]

In bismuth-doped iron garnets, diamagnetic dilution of Fe with Ga is a well-known method to increase the Faraday rotation response under externally applied magnetic fields. It is found, however, that while this method improves responsivity at larger field strengths, the responsivity under smaller fields (which are more typical in sensing applications) is generally unaffected by Ga doping. The data indicate that the low-field responsivity is limited by anomalous pinning effects in the rotational magnetization process of the ferromagnetic domains. To overcome this, a magnetic bias- ing technique was developed, which enhances responsivity by activating Barkhausen steps in the films to free the domains from their pinning sites. [ABSTRACT FROM AUTHOR]

Bismuth doped iron garnet films were studied in arrayed structures to improve sensitivity in polarimetric magnetic field sensors. The sensitivity gained from the arrayed configuration was found to depend on the ferromagnetic domain geometry of the films. Under small, externally applied fields, films with planar anisotropy yielded an optical modulation depth which increased linearly with the number of crystals in the array. In films with perpendicular anisotropy, linearity and sensitivity were obstructed by a mechanism of optical polarization incoherence which was found to be generated within the magnetic domains. Our results indicate that optimal sensitivity in arrayed configurations requires planar anisotropies, or a direction of laser propagation that is perpendicular to the local domain magnetization. [ABSTRACT FROM AUTHOR]

A promethium (Pm3+) laser has been demonstrated for the first time. Trivalent promethium 147 doped into a lead-indium-phosphate glass étalon was used to produce room-temperature four-level laser emission at wavelengths of 933 and 1098 nm. Spectroscopic and kinetic measurements have shown that Pm3+ is similar to Nd3+ as a laser active ion. [ABSTRACT FROM AUTHOR]

Examines the structure and hardness of epitaxial V[sub 0.6]Nb[sub 0.4]N/NbN superlattices. Deposition of the superlattices on magnesium oxide(100) by reactive sputtering; Assessment of the superlattice composition modulation; Measurement of titanium nitride/niobium nitride samples.

A correction to the article "Effects of diamagnetic Ga dilution on the Faraday response of bismuth-doped iron garnet films" which was originally published online on June 14, 2016 is presented.