Method and apparatus for upshifting light frequency by rapid plasma creation

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867628

Dawson, John M ^[1]; Wilks, Scott C ^[2]; Mori, Warren B ^[3]; Joshi, Chandrasekhar J ^[2]; Sessler, Andrew M ^[4]

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1. Pacific Palisades, CA
2. Santa Monica, CA
3. Hermosa Beach, CA
4. Oakland, CA

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.

• Research Organization: Univ. of California (United States)
• DOE Contract Number: FG03-87ER13752
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 4975655
• OSTI ID: 867628
• Country of Publication: United States
• Language: English

Related Subjects

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/