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Zero-Shear, Low-Disturbance Optical Delay Line
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Date added: 11/01/2003 |
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The only optical components would be two flat mirrors. |
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WRATS Integrated Data Acquisition System
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Date added: 03/01/2008 |
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The WRATS data acquisition system (DAS) is a 64 channel data acquisition, display, and analysis system specifically designed for use with the Wing and Rotor Aeroelastic Test System (WRATS) 1/5-scale V-22 tiltrotor model. The system consists of three networked computers running custom-designed LabView software that acquire data through National Instruments data acquisition hardware. |
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Working Fluids for Increasing Capacities of Heat Pipes
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Date added: 08/01/2004 |
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Fluids are formulated to make surface tensions increase with temperature. |
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Wind and Mountain Wave Observations From a Flight Test of a Solar-Powered Airplane
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Date added: 09/01/2002 |
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This airplane was shown to be useful for observing atmospheric waves. |
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Wide-Band, High-Quantum-Efficiency Photodetector
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Date added: 05/03/2007 |
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QKD applications require high-speed (10–10 bps) single photon counters. To date, the only detector technology with the potential to achieve this counting rate, with single photon sensitivity, is the hot-electron phonon cooled NbN detector1. The speed of this device relies on the uniquely short hot-electron relaxation time in NbN, which is ap- proximately 20 ps. This relaxation time results from two fast relaxation processes following each other: (i) fast cooling of hot electrons via emission to thermal phonons and (ii) the fast escape of phonons from the NbN film to a dielectric substrate. Extremely thin (2.5–3.0 nm) NbN films reduce the phonon escape time. Of the available materials, NbN has the fastest electron-phonon relaxation time and thus the highest potential output bandwidth. |
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Whispering-Gallery-Mode Microspheres as Light Modulators
hot!
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Date added: 11/01/2000 |
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Ultrahigh modulation effiency could be achieved. |
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WGM-Resonator/Tapered-Waveguide White-Light Sensor Optics
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Date added: 10/01/2007 |
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Searching for the compact sensors of high sensitivity led to gallery-mode-resonator (WGMR) based sensors. Resonator's usage takes fixed critical optical coupling, stable narrowband laser, mode locking. The Bessel beam technique removes all resonance related problems, conserving all advantages. |
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