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Displaying 11351 - 11375 of 17277
Anna Vaskuri, Daniel Rahn, Paul A. Williams, John H. Lehman
We have developed an absolute radiometer to measure laser power by means of radiation pressure in a closed control-loop configuration using diamagnetically levitated pyrolytic graphite as the soft spring and gravity as a contactless restoring force. Our
Accurate number concentrations of particles in liquid media are needed to assess the quality of water, pharmaceuticals, and other liquids, yet there are limited reference materials or calibration services available with clear traceability to the
The technical activities of the Materials Reliability Division during fiscal year 2000 are summarized. The Division has 23 research projects in the following eight program areas: Materials for Microelectronics (4): Materials for Wireless Communication (5)
Richard L. Kautz, Mark W. Keller, John M. Martinis
Computer simulations reveal that the lowest rates of leakage and counting errors observed in the electron pump can be explained by photon-assisted tunneling driven by 1/f noise. The noise power at microwave frequencies required to account for the observed
The following table gives the region of the expected nuclear magnetic resonance absorptions of hydrocarbon families. These absorptions are reported in the dimensionless units of parts per million (ppm) versus the standard compound tetramethylsilane (TMS
Paul A. Williams, William C. Swann, Nathan R. Newbury
We transmit a narrow-linewidth cw laser at 1535 nm across 38 km of installed fiber. Through standard Doppler-cancellation techniques, we achieve a residual fractional frequency instability of 4x10 -17 at 1 second averaging time.