Dual recycling is an advanced optical technique to enhance the signal-to-noise ratio of laser interferometric gravitational wave detectors in a limited bandwidth. To optimise the center of this band ...with respect to Fourier frequencies of expected gravitational wave signals detuned dual recycling has to be implemented. We demonstrated detuned dual recycling on a fully suspended 30m prototype interferometer. A control scheme that allows to tune the detector to different frequencies will be outlined. Good agreement between the experimental results and numerical simulations has been achieved.
?-phase and ?-??-phase Pt aluminide, two diffusion bond coats, were applied respectively to CMSX4 and RR3000, two single-crystal Ni-base superalloys, with and without a yttria partially-stabilised ...zirconia, EB-PVD top coat. The oxide scales developed on RR3000/?-??-phase Pt aluminide systems without YPSZ top coat were essentially ?-Al2O3 at 1,200°C and ?-Al2O3 plus ?-Al2O3 at 1,100°C. The oxide scales developed during thermal-cycling oxidation on RR3000/?-??-phase, Pt aluminide/YPSZ were found to be more resistant to spallation than the scales grown on CMSX4/?-phase, Pt aluminide/YPSZ. Spallation of the oxide scale occurred mainly at the bond coat-oxide scale interface but also within the oxide and at the oxide-top coat interface.
A high-bandwidth pulse-shaping/distribution system employing fiber-optic and integrated-optic technology has been built and implemented on the OMEGA laser-fusion facility to deliver variously shaped, ...0.1-ns to 5-ns duration, nanojoule optical pulses for amplification and frequency conversion.
Measuring international migration Zlotnik, Hania; Kritz, Mary M; Kraly, Ellen Percy ...
The International migration review,
01/1987, Letnik:
XXI, Številka:
4
Journal Article
