US Gov't Represented by the Secretary of the Navy Office of Naval Research (ONR/NRL) Code OOCCIP Patent applications |
Patent application number | Title | Published |
20120070790 | APPARATUS METHODS AND SYSTEMS OF UNIDIRECTIONAL PROPAGATION OF GASEOUS DETONATIONS - The detonation propagation in a channel geometry which suppresses detonation propagation in one direction, allows it in another direction, and does not create flow restrictions in the channel. The geometry consists of a series of divergent sections separated by wedges that form a sawtooth shape. The detonation fails to propagate through this geometry in one direction because the detonation front is weakened by diffraction, and reignition centers are isolated from the main channel. In an opposite direction, convergent parts of the geometry support the detonation propagation, because subsequent shock collisions with oblique walls that form convergent sections create powerful transverse waves. These powerful transverse waves help the detonation propagation or reignite it. | 03-22-2012 |
20110222048 | DOPPLER ASYMMETRIC SPATIAL HETERODYNE SPECTROSCOPY LIGHT DETECTION AND RANGING RECEIVER - Obtaining global tropospheric vertical wind profiles by directly detecting atmospheric winds using space borne, airborne and/or ground station platforms is accomplished by a DASH interferometer in the back-end of a Doppler wind LIDAR. In the front-end of the Doppler wind LIDAR, a laser illuminates an atmosphere and a telescope collects backscattered laser light return signals from the laser illuminated atmosphere. The DASH interferometer processes return signals from the atmosphere, forming an interferogram and determines from the interferogram a Doppler shift of the return signals, which is equivalent to determining the line of sight wind speed of the Doppler wind LIDAR observation, by measuring the frequency shift caused by winds. From this determination, global and/or non-global atmospheric wind profile data are transmitted over a communications network in either real-time and/or non-real-time, to facilitate weather forecasting, weather modeling, weather avoidance navigation, atmospheric research, hurricane warnings, operations systems selections and deployment of operational assets. | 09-15-2011 |
20100290487 | RECYCLING PUMP-BEAM METHOD AND SYSTEM FOR A HIGH-POWER TERAHERTZ PARAMETRIC SOURCE - A method and a system are implemented in the fabrication of a portable high power terahertz beam source that can produce a tunable, high power terahertz beam over the frequency from 0.1 THz to 2.5 THz. The terahertz source employs a recycling pump beam method and a beam quality control device. The beam quality control device may or may not be required for a high power terahertz beam generation. In exemplary embodiments, a lithium niobate (LiNbO | 11-18-2010 |
20100264904 | APPARATUS AND SYSTEM FOR A QUASI LONGITUDINAL MODE ELECTRO OPTIC SENSOR FOR HIGH POWER MICROWAVE TESTING - An apparatus, for measuring an applied electrical field and for reducing perturbation to the electrical field being measured, includes a laser integrated into an electro optic crystal sensor head prior to the output fiber. A probe beam is passed along the crystal direction of low birefringence of nearly circular optical indicatrix, rather than one of high EO modulation. The EO crystal is placed between two crossed polarizers and oriented such that a small tilt angle is subtended between its optic axis and the path of the probe beam. Improved optical coupling is achieved by using a large core multimode fiber at the output, to reduce optical insertion losses. A collimating lens emits the intensity modulated laser beam back to a photodetector, where the intensity modulated laser beam is converted to an electrical signal representing both field strength and phase of the electrical field applied to the sensor head. | 10-21-2010 |
20100264502 | METHODS AND SYSTEMS OF CURVED RADIATION DETECTOR FABRICATION - Gray tone lithography is used to form curved silicon topographies for semiconductor based solid-state imaging devices. The imagers are curved to a specific curvature and shaped directly for the specific application; such as curved focal planes. The curvature of the backside is independent from the front surface, which allows thinning of the detector using standard semiconductor processing. | 10-21-2010 |