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:
- Issue Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175074
- Patent Number(s):
- 6804009
- Application Number:
- 10/087,482
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
- 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}
}
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