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Defense Intelligence Reference Document Laser Lightcraft Nanosatellites

Defense Intelligence Agency · 77 pages · text from the file's own layer

This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 1 November 2010, was produced under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It describes nanosatellite technologies and proposes launching nanosats into orbit with laser Lightcraft propulsion. It also covers a weapon mission selection study and multi-megawatt laser options. The author recommends that the Department of Defense and NASA bring Lightcraft R&D back to the United States and restart the X-50LR flight demonstration program.

  • p. 2 …b)/3):10 USC 424 !Advanced Aerospace Weapon System Applications (AAWSA) Program.omments or questions pertaining…
  • p. 3 …Laser Lightcraft Weapon Mission Selection Study .................................. 27 Chapter 4: Summary of Multi-Megawatt Laser Study for…
  • p. 31 …Laser Lightcraft Weapon Mission Selection Study The objective of the Froning and Davis 26 study was…
  • p. 52 …Even though 100 kW beam power has long been the proof-of-principle sought for weapons…
  • p. 53 UNCLASSIFIED//F&II. &FFll!IAI! l!l!il! 9Hl:Y achieved by laser weapons with 25…
  • p. 57 …such systems have already been modified for weapons applications with a goal toward achieving > 100 kW…
  • p. 64 …The Naval Sea Systems Command's (NAVSEA) Directed Energy and Electric Weapon Systems (DE&EWS) Program…
  • p. 67 …HEL weapons usually have high-power optical trains containing more than a dozen mirrors. However, these…
  • p. 68 …and deployed by the various directed energy weapons programs that offers reduced complexity and component count…
  • p. 69 …the high precision required for a HEL Weapon, The sensor and Beam Expander must maintain precise…
  • p. 71 …done by the various DoD directed energy weapons/HEL programs can be immediately leveraged for laser…
  • p. 72 …ground/sea- or airborne-launched kinetic kill weapons to shoot down enemy ballistic missiles. Very innovative…
  • p. 73 …explored by the various DoD directed energy weapons programs offer higher electrical-to-optical efficiencies and…
  • p. 76 …E. (2009), Effects of Directed Energy Weapons: High Power Lasers, High Power Microwaves, and Particle Beams…
UNCLASSIFIED/ ,sralil &FFI&Itltl H:81! 8HLY
Master Oscillator, Power
Amplifier (MOPA)
Fiber coupled
pump modules
Master Oscillator (frber
oscillator, or diode laser)
(6+1) to 1
Combiner
l
Doped double-clad gain
f7
/High power endcap
Figure 22. Typical HPFL MOPA Design (courtesy of the Directed Energy Professional
Society).
State of the Art in Fiber Combining
Passive phasing:
far field-mteling & coupling
- -
Microlens Beamsplitter, 4%
') Array
(
' Pinhol'-;;;;.
Microlens -O _
,:1
Incoherent Beam Combining 'Ind1vidually Incoherent Gaussian Beams i=L
Controlled
/_/Steering • ... o~bined Beams;ITarget
Mirrors - -- _ Area:
~>-2R,
@},,A,.,.,,,
t :+: t Collimating
~ ~ Lenses
, Fiber Laser Array Hexagonal Beam Director
Spectral Beam Combining: fibers at
different wavelengths bu\same direction
~~,,~.,.Fiber Array = == "
•
/ Coherent beam combining (CBC)
Talbot: self-imaging coupling
•
MOPA: master feeds amps & active
phm eootrol P~•,;,•~,°'tp'\~
Maste;~---,
·•- _:: --►
Phase
control 99 ¢i
Detectors
Figure 23. Fiber Laser Beam Combining Techniques (courtesy of the Directed Energy
Professional Society).
54
UNCLASSIFIED/ ff81l 8ffll!lllit 1!191! 9HL I

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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 77 pages are in the text index: search them above, or from the library's search.