Efficient optical pulse stacker system

Patent · 01 January 1982

OSTI ID:864315

Seppala, Lynn G ^[1]; Haas, Roger A ^[1]

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1. Pleasanton, CA

Method and apparatus for spreading and angle-encoding each pulse of a multiplicity of small area, short pulses into several temporally staggered pulses by use of appropriate beam splitters, with the optical elements being arranged so that each staggered pulse is contiguous with one or two other such pulses, and the entire sequence of stacked pulses comprising a single, continuous long pulse. The single long pulse is expanded in area, and then doubly passed through a nonstorage laser amplifier such as KrF. After amplification, the physically separated, angle-encoded and temporally staggered pulses are recombined into a single pulse of short duration. This high intensity output beam is well collimated and may be propagated over long distance, or used for irradiating inertial confinement fusion targets.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4345212
• OSTI ID: 864315
• Country of Publication: United States
• Language: English

Related Subjects

/359/372/
amplification
amplifier
angle-encoded
angle-encoding
apparatus
appropriate
arranged
beam
beam splitter
beam splitters
collimated
comprising
confinement
confinement fusion
contiguous
continuous
distance
doubly
duration
efficient
elements
entire
expanded
fusion
fusion target
fusion targets
inertial
inertial confinement
intensity
irradiating
krf
laser
laser amplifier
method
multiplicity
nonstorage
optical
optical element
optical elements
optical pulse
output
output beam
passed
physically
physically separated
propagated
pulse
pulse stacker
pulses
recombined
separated
sequence
single
single pulse
splitters
spreading
stacked
stacker
staggered
targets
temporally