Multipass laser amplification with near-field far-field optical separation

Patent · Mon Jan 01 00:00:00 EST 1979

OSTI ID:863363

Hagen, Wilhelm F ^[1]

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1. Livermore, CA

This invention discloses two classes of optical configurations for high power laser amplification, one allowing near-field and the other allowing far-field optical separation, for the multiple passage of laser pulses through one or more amplifiers over an open optical path. These configurations may reimage the amplifier or any other part of the cavity on itself so as to suppress laser beam intensity ripples that arise from diffraction and/or non-linear effects. The optical cavities combine the features of multiple passes, spatial filtering and optical reimaging and allow sufficient time for laser gain recovery.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4156852
• OSTI ID: 863363
• Country of Publication: United States
• Language: English

Related Subjects

multipass
laser
amplification
near-field
far-field
optical
separation
discloses
configurations
power
allowing
multiple
passage
pulses
amplifiers
path
reimage
amplifier
cavity
suppress
beam
intensity
ripples
arise
diffraction
non-linear
effects
cavities
combine
features
passes
spatial
filtering
reimaging
allow
sufficient
time
recovery
spatial filter
laser amplification
multiple passes
beam intensity
laser pulses
laser pulse
laser beam
optical path
power laser
sufficient time
optical separation
multiple pass
far-field optical
pass laser
allow sufficient
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