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Title: Wollaston prism phase-stepping point diffraction interferometer and method

Abstract

A Wollaston prism phase-stepping point diffraction interferometer for testing a test optic. The Wollaston prism shears light into reference and signal beams, and provides phase stepping at increased accuracy by translating the Wollaston prism in a lateral direction with respect to the optical path. The reference beam produced by the Wollaston prism is directed through a pinhole of a diaphragm to produce a perfect spherical reference wave. The spherical reference wave is recombined with the signal beam to produce an interference fringe pattern of greater accuracy.

Inventors:
Publication Date:
Research Org.:
The Regents of the University of California, Oakland, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175074
Patent Number(s):
6,804,009
Application Number:
10/087,482
Assignee:
The Regents of the University of California (Oakland, CA) OSTI
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Rushford, Michael C. Wollaston prism phase-stepping point diffraction interferometer and method. United States: N. p., 2004. Web.
Rushford, Michael C. Wollaston prism phase-stepping point diffraction interferometer and method. United States.
Rushford, Michael C. Tue . "Wollaston prism phase-stepping point diffraction interferometer and method". United States. https://www.osti.gov/servlets/purl/1175074.
@article{osti_1175074,
title = {Wollaston prism phase-stepping point diffraction interferometer and method},
author = {Rushford, Michael C.},
abstractNote = {A Wollaston prism phase-stepping point diffraction interferometer for testing a test optic. The Wollaston prism shears light into reference and signal beams, and provides phase stepping at increased accuracy by translating the Wollaston prism in a lateral direction with respect to the optical path. The reference beam produced by the Wollaston prism is directed through a pinhole of a diaphragm to produce a perfect spherical reference wave. The spherical reference wave is recombined with the signal beam to produce an interference fringe pattern of greater accuracy.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 12 00:00:00 EDT 2004},
month = {Tue Oct 12 00:00:00 EDT 2004}
}

Patent:

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