USA As Represented by Secretary of the Navy

Bienvenido Melvin L Pascoguin

Ryan P Lu

Ayax D Ramirez

Brittany E Lynn

Alexandru Hening

James R Adleman

Carlos M Torres, Jr

Vincent V Dinh

Aaron J Lebsack

Brad Chun-Ting Liu

Michael P Ross

A method for jamming a target includes aiming a pulsed laser at the target using a tracking system. The pulsed laser emits a pulsed laser beam at the target, thereby generating plasma that causes sound waves equal to or less than 5 ft from the target. The pulsed laser beam is swept with a frequency range to find a target frequency, thereby jamming the target.

Target jamming

A laser-induced plasma (LIP) sound generator comprising: a laser beam and a first beam splitter configured to split the laser into a plurality of sub-laser beams such that each sub-laser beam creates a LIP at a respective focal point, wherein each focal point lies within an imaginary sphere having a radius that is less than half of a desired sound wavelength such that acoustic fields of the LIPs add together as if from a single point source.

High acoustic-amplitude laser-induced plasma (LIP) sound generator

A method removes defects in a dielectric layer, such as during fabrication of a device that emits light from hot electrons injected into an atomically two-dimensional material. An atomically two-dimensional material and the dielectric layer are adjoined. The dielectric layer is adapted to convey a variable electric field for modulating a wavelength of photons electronically emitted across a band structure of the atomically two-dimensional material. Laser pulses are strobed into the dielectric layer with sufficient cumulative energy to remove a majority of the defects in the dielectric layer without altering the atomically two-dimensional material.

Laser removal of defects in a dielectric for modulating an adjoining atomically two-dimensional material

A system for electromagnetic communication with a vortex beam concurrently conveys multiple topological charges of orbital angular momentum. The system includes a source, at least one vortex-sensing diffraction grating, and an array of photodetectors. The source generates the vortex beam concurrently conveying a respective number of selected topological charges during each of the time intervals. The selected topological charges for each time interval are selected from a set of available topological charges. The selected topological charges for each time interval encode a symbol of data. The vortex-sensing diffraction grating combines a vortex phase pattern and a linear phase pattern. The vortex sensing diffraction grating produces a diffraction pattern from diffracting the vortex beam received from the source. The array of photodetectors detects portions of the diffraction pattern and from the detected portions recovers the selected topological charges encoding the symbol of each time interval.

Electromagnetic communication with a vortex beam concurrently conveying multiple topological charges

A system and method generates confined electromagnetic radiation emanating from a remote position along a line of sight. The system includes a laser arrangement and a wavefront modifier. The laser arrangement generates at least one laser beam. The wavefront modifier produces a spatial arrangement of foci of the laser beam directed along the line of sight. The foci of the laser beam induce plasma filaments within an atmosphere at the remote position along the line of sight. The plasma filaments emit the electromagnetic radiation emanating from the remote position along the line of sight.

Remotely emitting confined electromagnetic radiation from laser-induced plasma filaments

A focus controlling component is configured to control a focus of a laser beam that passes through water and induces plasmas that emit signals. The focus of the laser beam is controlled such that the signals emitted by the induced plasmas interfere to form a combined signal that propagates in a desired direction.

Device, system, and method for controlling the focus of a laser to induce plasmas that emit signals with high directivity

An apparatus, method and system for dermatologically noninvasive testing for blood sugar concentration using an interferometry optical design. The present apparatus, method and system are used to measure the optical properties of blood, without puncturing the skin or drawing blood samples. They incorporate the use of an electromagnetic light source and two optical polarizers. A dermatological sample, e.g., the earlobe, webbing between fingers, is illuminated with polarized electromagnetic light. When the linearly polarized light passes through this dermatological sample, the blood in the dermatological sample acts as an optical rotator due to the optical interaction with the blood sample. The presence of molecular chirality in the blood sample induces optical activity. After the skin is illuminated, a second polarizer finds the orientation of the polarization by maximizing the intensity on the photo detector. As a result, the blood sugar concentration may be determined.

Dermatologically non-abrasive blood testing using an interferometry optical design

A method for spatial and intensity control of remote foci locations of an optical beam generated from a light source. First and second, axially-aligned, non-diffractive foci are created by passing the optical beam through a phase mask and a Fourier lens. The phase mask q(s) is designed to have an axial response according to the following equation: The properties of the phase mask may be altered to independently vary location and intensity of the first and second foci.

Spatial phase mask design for remote laser plasma filament confinement lifetime control

A method and fluid antenna apparatus are disclosed that incorporate optical agitation of electrolytes. The fluid antenna comprises a substantially enclosed container having a transparent window, an electrolytic fluid disposed within the substantially enclosed container, a light source, the light source producing an optical beam, wherein the light source is configured to direct the optical beam into the container; wherein the transparent window is configured to receive the optical beam from the light source; and wherein the beam has sufficient intensity to enable movement of charged particles in the electrolytic fluid in the container via radiation pressure.

Method and apparatus for optical agitation of electrolytes in a fluid-based antenna

A color-changing lighting system includes a color temperature meter for determining a color temperature of visible light within an environment. The color-changing lighting system also includes a microprocessor for converting the color temperature of the visible light to red, green, and blue (RGB) values. The color-changing lighting system further includes a light control unit for calibrating a full spectrum color changing light source to output light having the color temperature of the visible light within the environment, according to the RGB values.

Automated environmental control of color temperature using full spectrum color changing light emitting diodes

A fluid-channeling device comprising: a fluid source; and a beam generator configured to generate a collimated vortex beam, wherein the beam generator is operatively coupled to the fluid source such that fluid from the fluid source may be introduced into a vortex of the collimated vortex beam, and wherein the collimated vortex beam is tuned such that when the fluid is in the vortex the fluid interacts with the collimated vortex beam to create an insulating pseudo-wall between the collimated vortex beam and the fluid such that the fluid is suspended in, and capable of traveling through, the vortex.

Fluidic channel based on a filtered, free-space electromagnetic wave source

Apparatus and methods for simultaneously producing multiple images of a subject are provided. The multiple images include images having different light intensity ranges that can be combined into a single image with a high dynamic range (HDR). The apparatus include a fly's eye lens system and at least one optical sensor.

Apparatus and methods using a fly's eye lens system for the production of high dynamic range images

A method and camera for generating a high dynamic range (HDR) image comprising the following steps: receiving a first optical signal from a lens and generating a first output signal at a first image acquisition chip, wherein the first image acquisition chip is coated with a first partial reflection coating; reflecting the first optical signal off the first partial reflection coating to create a second optical signal such that the second optical signal has a lower intensity than the first optical signal; receiving the second optical signal and generating a second output signal at a second image acquisition chip; and combining the first and second output signals to create the HDR image.

Single image acquisition high dynamic range camera by distorted image restoration

Methods enable the capture and manipulation of minute particles. One method includes locating a particle on a specimen stage; generating a finite-length open-ended hollow tube laser output around the particle; generating opposing end-cap laser outputs at either end of the hollow tube laser output to enclose the particle; and moving at least one of the specimen stage, hollow tube laser output and end cap laser outputs to re-position the particle. Another method includes locating a particle on a specimen stage; generating a first finite-length open-ended hollow tube laser output around the particle; generating a second finite-length open-ended hollow tube laser output around the particle, whereby the particle becomes enclosed at the intersection of the first and second hollow tube laser outputs; and pivoting at least one of the first and second hollow tube laser outputs such that the particle is re-positioned.

Growing community of inventors

La Mesa, CA, United States of America

Bienvenido Melvin L Pascoguin