Appeal No. 96-2043
Application 07/990,514
larger, or 320 nsec. This latter set of mirrors is arranged
so as to optically delay
each of the 16 beams by time intervals )t =rJ(r=0, 1, . . . ,
r
15) so that these beams arrive at a common beam expander
(convex
reflector) 25 in serial order, forming a temporally continuous
pulse (see FIG. 2) of time duration )t=16J.320 nsec. The
temporally sequenced pulses are reflected from the convex
reflector 25 and expanded to fill the aperture of an amplifier
27. After passage once through the amplifier, each pulse
encounters a large concave reflector 29 that returns the pulse
through the amplifier for further amplification, and directs
it to a second convex reflector 31. The reflector 31
recollimates and directs each beam to an array 33 of plane
100% reflectors, positioned in such a way that, after
reflection from this array, the beams are parallel to each
other, and all the pulses are temporally coincident. The
final pulse length is again 20 nsec. See col. 3, line 50-col.
10
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