Method and apparatus for upshifting light frequency by rapid plasma creation
Abstract
Photons of an electromagnetic source wave are frequency-upshifted as a plasma is rapidly created around the path of this propagating source wave. The final frequency can be controlled by adjusting the gas density. A controlled time-varying frequency (chirped) pulse can be produced by using a controlled spatially varying gas density. The plasma must be created in a time which is short compared to the transit time of the light through the plasmas region. For very fast creation over one to at most a few light periods of an overdense plasma, static magnetic fields with short wavelengths are created.
- Inventors:
-
- Pacific Palisades, CA
- Santa Monica, CA
- Hermosa Beach, CA
- Oakland, CA
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- OSTI Identifier:
- 867628
- Patent Number(s):
- 4975655
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
- DOE Contract Number:
- FG03-87ER13752
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; apparatus; upshifting; light; frequency; rapid; plasma; creation; photons; electromagnetic; source; wave; frequency-upshifted; rapidly; created; path; propagating; final; controlled; adjusting; gas; density; time-varying; chirped; pulse; produced; spatially; varying; time; compared; transit; plasmas; region; fast; periods; overdense; static; magnetic; fields; wavelengths; gas density; transit time; magnetic field; magnetic fields; static magnetic; source wave; varying frequency; light frequency; /359/
Citation Formats
Dawson, John M, Wilks, Scott C, Mori, Warren B, Joshi, Chandrasekhar J, and Sessler, Andrew M. Method and apparatus for upshifting light frequency by rapid plasma creation. United States: N. p., 1990.
Web.
Dawson, John M, Wilks, Scott C, Mori, Warren B, Joshi, Chandrasekhar J, & Sessler, Andrew M. Method and apparatus for upshifting light frequency by rapid plasma creation. United States.
Dawson, John M, Wilks, Scott C, Mori, Warren B, Joshi, Chandrasekhar J, and Sessler, Andrew M. Mon .
"Method and apparatus for upshifting light frequency by rapid plasma creation". United States. https://www.osti.gov/servlets/purl/867628.
@article{osti_867628,
title = {Method and apparatus for upshifting light frequency by rapid plasma creation},
author = {Dawson, John M and Wilks, Scott C and Mori, Warren B and Joshi, Chandrasekhar J and Sessler, Andrew M},
abstractNote = {Photons of an electromagnetic source wave are frequency-upshifted as a plasma is rapidly created around the path of this propagating source wave. The final frequency can be controlled by adjusting the gas density. A controlled time-varying frequency (chirped) pulse can be produced by using a controlled spatially varying gas density. The plasma must be created in a time which is short compared to the transit time of the light through the plasmas region. For very fast creation over one to at most a few light periods of an overdense plasma, static magnetic fields with short wavelengths are created.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}
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