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Title: Narrow bandwidth detection of vibration signature using fiber lasers

Abstract

The various technologies presented herein relate to extracting a portion of each pulse in a series of pulses reflected from a target to facilitate determination of a Doppler-shifted frequency for each pulse and, subsequently, a vibration frequency for the series of pulses. Each pulse can have a square-wave configuration, whereby each pulse can be time-gated to facilitate discarding the leading edge and the trailing edge (and associated non-linear effects) of each pulse and accordingly, capture of the central portion of the pulse from which the Doppler-shifted frequency, and ultimately, the vibration frequency of the target can be determined. Determination of the vibration velocity facilitates identification of the target being in a state of motion. The plurality of pulses can be formed from a laser beam (e.g., a continuous wave), the laser beam having a narrow bandwidth.

Inventors:
;
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1440531
Patent Number(s):
9,964,431
Application Number:
14/541,609
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM) SNL
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Nov 14
Country of Publication:
United States
Language:
English

Citation Formats

Moore, Sean, and Soh, Daniel B.S.. Narrow bandwidth detection of vibration signature using fiber lasers. United States: N. p., 2018. Web.
Moore, Sean, & Soh, Daniel B.S.. Narrow bandwidth detection of vibration signature using fiber lasers. United States.
Moore, Sean, and Soh, Daniel B.S.. Tue . "Narrow bandwidth detection of vibration signature using fiber lasers". United States. doi:. https://www.osti.gov/servlets/purl/1440531.
@article{osti_1440531,
title = {Narrow bandwidth detection of vibration signature using fiber lasers},
author = {Moore, Sean and Soh, Daniel B.S.},
abstractNote = {The various technologies presented herein relate to extracting a portion of each pulse in a series of pulses reflected from a target to facilitate determination of a Doppler-shifted frequency for each pulse and, subsequently, a vibration frequency for the series of pulses. Each pulse can have a square-wave configuration, whereby each pulse can be time-gated to facilitate discarding the leading edge and the trailing edge (and associated non-linear effects) of each pulse and accordingly, capture of the central portion of the pulse from which the Doppler-shifted frequency, and ultimately, the vibration frequency of the target can be determined. Determination of the vibration velocity facilitates identification of the target being in a state of motion. The plurality of pulses can be formed from a laser beam (e.g., a continuous wave), the laser beam having a narrow bandwidth.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 08 00:00:00 EDT 2018},
month = {Tue May 08 00:00:00 EDT 2018}
}

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