Analyzing algorithms for nonlinear and spatially nonuniform phase shifts in the liquid crystal point diffraction interferometer. 1998 summer research program for high school juniors at the University of Rochester`s Laboratory for Laser Energetics: Student research reports
Abstract
Phase-shifting interferometry has many advantages, and the phase shifting nature of the Liquid Crystal Point Diffraction Interferometer (LCPDI) promises to provide significant improvement over other current OMEGA wavefront sensors. However, while phase-shifting capabilities improve its accuracy as an interferometer, phase-shifting itself introduces errors. Phase-shifting algorithms are designed to eliminate certain types of phase-shift errors, and it is important to chose an algorithm that is best suited for use with the LCPDI. Using polarization microscopy, the authors have observed a correlation between LC alignment around the microsphere and fringe behavior. After designing a procedure to compare phase-shifting algorithms, they were able to predict the accuracy of two particular algorithms through computer modeling of device-specific phase shift-errors.
- Authors:
-
- Pittsford Sutherland High School, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Rochester, Lab. for Laser Energetics, NY (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 362525
- Report Number(s):
- DOE/SF/19460-299-Pt.4
ON: DE99003384; TRN: AHC29926%%180
- DOE Contract Number:
- FC03-92SF19460
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: Mar 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION; OMEGA FACILITY; NEODYMIUM LASERS; INTERFEROMETERS; PHASE SHIFT; BEAM MONITORS; LASER RADIATION; ALGORITHMS; COMPARATIVE EVALUATIONS; ERRORS; ALIGNMENT; DIRECT DRIVE LASER IMPLOSION
Citation Formats
Jain, N. Analyzing algorithms for nonlinear and spatially nonuniform phase shifts in the liquid crystal point diffraction interferometer. 1998 summer research program for high school juniors at the University of Rochester`s Laboratory for Laser Energetics: Student research reports. United States: N. p., 1999.
Web. doi:10.2172/362525.
Jain, N. Analyzing algorithms for nonlinear and spatially nonuniform phase shifts in the liquid crystal point diffraction interferometer. 1998 summer research program for high school juniors at the University of Rochester`s Laboratory for Laser Energetics: Student research reports. United States. https://doi.org/10.2172/362525
Jain, N. 1999.
"Analyzing algorithms for nonlinear and spatially nonuniform phase shifts in the liquid crystal point diffraction interferometer. 1998 summer research program for high school juniors at the University of Rochester`s Laboratory for Laser Energetics: Student research reports". United States. https://doi.org/10.2172/362525. https://www.osti.gov/servlets/purl/362525.
@article{osti_362525,
title = {Analyzing algorithms for nonlinear and spatially nonuniform phase shifts in the liquid crystal point diffraction interferometer. 1998 summer research program for high school juniors at the University of Rochester`s Laboratory for Laser Energetics: Student research reports},
author = {Jain, N},
abstractNote = {Phase-shifting interferometry has many advantages, and the phase shifting nature of the Liquid Crystal Point Diffraction Interferometer (LCPDI) promises to provide significant improvement over other current OMEGA wavefront sensors. However, while phase-shifting capabilities improve its accuracy as an interferometer, phase-shifting itself introduces errors. Phase-shifting algorithms are designed to eliminate certain types of phase-shift errors, and it is important to chose an algorithm that is best suited for use with the LCPDI. Using polarization microscopy, the authors have observed a correlation between LC alignment around the microsphere and fringe behavior. After designing a procedure to compare phase-shifting algorithms, they were able to predict the accuracy of two particular algorithms through computer modeling of device-specific phase shift-errors.},
doi = {10.2172/362525},
url = {https://www.osti.gov/biblio/362525},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 01 00:00:00 EST 1999},
month = {Mon Mar 01 00:00:00 EST 1999}
}