AAWSAP DIRD, Laser Lightcraft Nanosatellites, November 2010

Text

This text came with the file. It may have mistakes. When the text and the image disagree, the image is right.

UNCLASSIFIED/,'rOR: orrlCIAL USE 014Lf
Master Oscillator, Power
Amplifier (MOPA)
Fiber coupled
Doped double-clad gain
pump modules
7
/
High power endcap
Master Oscillator (fiber
oscillator, or diode laser)
Figure 22. Typical HPFL MOPA Design {courtesy of the Directed Energy Professional
Society).
State of the Art in Fiber Combining
Passive phuing:
far field-filtering & coupling
Coherent beam combining (CBC)
:
Collimating : (B
!d
len
!--=----
Far field
:
~
: Syste
:
~
i-OUtput
'
-
,
~
:_ ___ ~-- --------- ---:
~
Individually
Incoherent Beam Combining
Talbot: self-Imaging coupling
Control
Steerin
Target
MirrorsE-1--+..;..-------== ........ Area:
He~agonal Beam Director
Fiber Laser Array
Spectral Beam Combining: fibers at
different wavelengths bu~ ame direction
~~~;::::==-=-==-
===1-,k
~
...... .
Fiber Array ~
J. = D .,..
n cos( o_ )
Figure 23. Fiber Laser Beam Combining Techniques {courtesy of the Directed Energy
Professional Society).
UNCLASSIFIED{fFOA 9FFH31AL ~8! 8HLY
54