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Title: Heterodyne interferometer with angstrom-level periodic nonlinearity

Abstract

Displacement measuring interferometer systems and methods are disclosed. One or more acousto-optic modulators for receiving a laser light beam from a laser light source can be utilized to split the laser light beam into two or more laser light beams, while spatially separating frequencies thereof. One or more reflective mechanisms can be utilized to reflect one or more of the laser light beams back to the acousto-optic modulator. Interference of two or more of the laser light beams generally at the acousto-optic modulator can provide an interfered laser light beam thereof. A detector for receiving the interfered laser light beam can be utilized to provide interferometer measurement data.

Inventors:
 [1];  [2]
  1. Gainesville, FL
  2. Indialantic, FL
Issue Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
920035
Patent Number(s):
6847455
Application Number:
10/254,567
Assignee:
The United States of America as represented by the Department of Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Schmitz, Tony L, and Beckwith, John F. Heterodyne interferometer with angstrom-level periodic nonlinearity. United States: N. p., 2005. Web.
Schmitz, Tony L, & Beckwith, John F. Heterodyne interferometer with angstrom-level periodic nonlinearity. United States.
Schmitz, Tony L, and Beckwith, John F. Tue . "Heterodyne interferometer with angstrom-level periodic nonlinearity". United States. https://www.osti.gov/servlets/purl/920035.
@article{osti_920035,
title = {Heterodyne interferometer with angstrom-level periodic nonlinearity},
author = {Schmitz, Tony L and Beckwith, John F},
abstractNote = {Displacement measuring interferometer systems and methods are disclosed. One or more acousto-optic modulators for receiving a laser light beam from a laser light source can be utilized to split the laser light beam into two or more laser light beams, while spatially separating frequencies thereof. One or more reflective mechanisms can be utilized to reflect one or more of the laser light beams back to the acousto-optic modulator. Interference of two or more of the laser light beams generally at the acousto-optic modulator can provide an interfered laser light beam thereof. A detector for receiving the interfered laser light beam can be utilized to provide interferometer measurement data.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {1}
}

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Works referenced in this record:

Non-linearity in length measurement using heterodyne laser Michelson interferometry
journal, October 1987


A simple technique for observing periodic nonlinearities in Michelson interferometers
journal, October 1998


A frequency domain method for the measurement of nonlinearity in heterodyne interferometry
journal, January 2000


Optical sources of non-linearity in heterodyne interferometers
journal, January 1990


Recent advances in displacement measuring interferometry
journal, September 1993


Analysis of the measurement error of the parameters of mechanical vibrations
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Heterodyne interferometer to measure vibration parameters
journal, January 1984


Residual errors in laser interferometry from air turbulence and nonlinearity
journal, January 1987


Analytical modeling of the periodic nonlinearity in heterodyne interferometry
journal, January 1998


Probing of Acoustic Surface Perturbations by Coherent Light
journal, January 1969


Heterodyne interferometer with subatomic periodic nonlinearity
journal, January 1999