Coherent light generators – Particular resonant cavity – Mirror support or alignment structure
Reexamination Certificate
2008-07-07
2010-02-16
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular resonant cavity
Mirror support or alignment structure
C372S055000, C359S838000, C359S871000, C359S872000
Reexamination Certificate
active
07664159
ABSTRACT:
A laser mirror assembly is disclosed with improved pointing stability. An elongated mirror includes a concave reflecting portion. A pair of elongated planar portions extend parallel to the concave reflecting portion on either side thereof. The planar portions are stepped down from the reflecting portion. The mirror is formed from copper. A pair of stainless steel strips are connected to planar portions. The bimetallic effect between the copper mirror and the stainless steel strips operates to counteract the warping of the mirror due to differential heating effects which arise during operation. In an alternate embodiment, a pair of aluminum strips are mounted on the rear surface of the mirror.
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U.S. Appl. No. 12/079,296, filed Mar. 26, 2008, by Leon A. Newman et al., entitled “RF Excited CO2Slab Laser Tube Housing and Electrodes Cooling,” 28 pages in length.
U.S. Appl. No. 60/962,555, filed Jul. 30, 2007, by Christian J. Shackleton et al., entitled “Ceramic Enclosed Slab Laser Discharge with a Stand-Off Distance Between the Ceramic Strips and the Discharge,” 11 pages in length.
Laughman Lanny
Newman Leon A.
Papanide Adrian
Seguin Vernon A.
Coherent Inc.
Harvey Minsun
Morrison & Foerster / LLP
Nguyen Phillip
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