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Title: Split-field pupil plane determination apparatus

A split-field pupil plane determination apparatus (10) having a wedge assembly (16) with a first glass wedge (18) and a second glass wedge (20) positioned to divide a laser beam (12) into a first laser beam half (22) and a second laser beam half (24) which diverge away from the wedge assembly (16). A wire mask (26) is positioned immediately after the wedge assembly (16) in the path of the laser beam halves (22, 24) such that a shadow thereof is cast as a first shadow half (30) and a second shadow half (32) at the input to a relay telescope (14). The relay telescope (14) causes the laser beam halves (22, 24) to converge such that the first shadow half (30) of the wire mask (26) is aligned with the second shadow half (32) at any subsequent pupil plane (34).
  1. (Livermore, CA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) LLNL
Patent Number(s):
US 5570189
Application Number:
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
split-field; pupil; plane; determination; apparatus; 10; wedge; assembly; 16; glass; 18; 20; positioned; divide; laser; beam; 12; half; 22; 24; diverge; wire; mask; 26; immediately; path; halves; shadow; cast; 30; 32; input; relay; telescope; 14; causes; converge; aligned; subsequent; 34; wedge assembly; laser beam; pupil plane; positioned immediately; determination apparatus; split-field pupil; glass wedge; plane determination; /356/