Coherent light generators – Particular resonant cavity – Specified cavity component
Reexamination Certificate
2006-01-31
2006-01-31
Harvey, Min Sun (Department: 2828)
Coherent light generators
Particular resonant cavity
Specified cavity component
C372S100000, C372S075000
Reexamination Certificate
active
06993059
ABSTRACT:
Apparatus for reducing spacing between a plurality of parallel, spaced apart plane-polarized laser-radiation beams delivered by a stack of laser-diode bars includes a ninety degree polarization rotator, and a compound prism including a total reflecting surface an internal polarization-selective surface parallel to each other. The polarization-selective surface is highly transmissive for radiation plane-polarized in one polarization orientation and highly reflective for radiation plane-polarized at ninety degrees to that orientation. The polarization rotator rotates the polarization of a portion of the beams. The beams are transmitted through the compound prism with the portion of polarization-rotated beams following a different path through the prism from that of the beams that are not polarization rotated. The beams exit the prism with spacing therebetween one-half of the spacing between beams entering the prism.
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Anikitchev Serguei G.
Austin R. Russel
Coherent Inc.
Flores-Ruiz Delma R.
Harvey Min Sun
Stallman & Pollock LLP
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