Method and apparatus for detection of contaminants in air by laser-induced filamentation
US-9897548-B2 · Feb 20, 2018 · US
Laser-induced plasma filaments for communication
US10069564B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10069564-B2 |
| Application number | US-201615052722-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 24, 2016 |
| Priority date | Feb 27, 2015 |
| Publication date | Sep 4, 2018 |
| Grant date | Sep 4, 2018 |
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- Title
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Abstract
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A system and method involve using a first laser to generate a laser-induced plasma filament within an optically-transparent medium, using a second laser to generate a communication signal, and using a signal combiner positioned within the path of both the first laser and the second laser to direct the communication signal through the laser-induced plasma filament to a receiver located within the optically-transparent medium.
First claim
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We claim: 1. A method comprising the steps of: using a first laser to generate a laser-induced plasma filament within an optically-transparent medium, wherein the first laser is a Kypton fluoride laser configured with a wavelength of 248 nm, an energy of 400 mJ, a pulse duration of 20 ns, and a power of about 20 MW; using a second laser to generate an optical communication signal; and using a signal combiner positioned within the path of both the first laser and the second laser to direct the optical communication signal through the laser-induced plasma filament to an optical receiver located within the optically-transparent medium. 2. The method of claim 1 , wherein the optically-transparent medium is a liquid. 3. The method of claim 1 , wherein the optically-transparent medium is a gas. 4. A method comprising the steps of: using a first laser to generate a laser-induced plasma filament within an optically-transparent medium, wherein the first laser is a Kypton fluoride laser configured with a wavelength of 308 nm, an energy of 1.0 J, a pulse duration of 20 ns, and a power of about 50 MW; using a second laser to generate an optical communication signal; and using a signal combiner positioned within the path of both the first laser and the second laser to direct the optical communication signal through the laser-induced plasma filament to an optical receiver located within the optically-transparent medium. 5. The method of claim 4 , wherein the optically-transparent medium is one of a liquid and a gas. 6. A system comprising: a first laser configured to generate a laser-induced plasma filament within an optically-transparent medium, wherein the optically-transparent medium is a liquid, wherein the first laser is a Kypton fluoride laser configured with a wavelength of 248 nm, an energy of 400 mJ, a pulse duration of 20 ns, and a power of about 20 MW; a second laser configured to generate an optical communication signal; an optical receiver separated from the first laser and the second laser by the optically-transparent medium, wherein the optical receiver is configured to receive the optical communication signal; and a signal combiner positioned within the path of both the first laser and the second laser such that the optical communication signal is directed by the signal combiner through the laser-induced plasma filament to the optical receiver.
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Classifications
Beam splitting or combining systems (polarising systems G02B27/28; mixing and splitting light signals using optical waveguides G02B6/28; {beam shaping, e.g. changing the cross-sectional area, by dividing or superposing multiple light beams G02B27/0905}) · CPC title
Self-focusing or self-trapping of light; Light-induced birefringence; Induced optical Kerr-effect · CPC title
- H04B10/1123Primary
Bidirectional transmission · CPC title
Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water · CPC title
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- What does patent US10069564B2 cover?
- A system and method involve using a first laser to generate a laser-induced plasma filament within an optically-transparent medium, using a second laser to generate a communication signal, and using a signal combiner positioned within the path of both the first laser and the second laser to direct the communication signal through the laser-induced plasma filament to a receiver located within th…
- Who is the assignee on this patent?
- Us Navy
- What technology area does this patent fall under?
- Primary CPC classification H04B10/1123. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 04 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).