skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Laser bandwidth interlock capable of single pulse detection and rejection

Abstract

A pulse of laser light is switched out of a pulse train and spatially dispersed into its constituent wavelengths. The pulse is collimated to a suitable size and then diffracted by high groove density multilayer dielectric gratings. This imparts a different angle to each individual wavelength so that, when brought to the far field with a lens, the colors have spread out in a linear arrangement. The distance between wavelengths (resolution) can be tailored for the specific laser and application by altering the number of times the beam strikes the diffraction gratings, the groove density of the gratings and the focal length of the lens. End portions of the linear arrangement are each directed to a respective detector, which converts the signal to a 1 if the level meets a set-point, and a 0 if the level does not. If both detectors produces a 1, then the pulse train is allowed to propagate into an optical system.

Inventors:
; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1079477
Patent Number(s):
8,284,809
Application Number:
12/729,138
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Armstrong, James P, Telford, Steven James, Lanning, Rodney Kay, and Bayramian, Andrew James. Laser bandwidth interlock capable of single pulse detection and rejection. United States: N. p., 2012. Web.
Armstrong, James P, Telford, Steven James, Lanning, Rodney Kay, & Bayramian, Andrew James. Laser bandwidth interlock capable of single pulse detection and rejection. United States.
Armstrong, James P, Telford, Steven James, Lanning, Rodney Kay, and Bayramian, Andrew James. Tue . "Laser bandwidth interlock capable of single pulse detection and rejection". United States. https://www.osti.gov/servlets/purl/1079477.
@article{osti_1079477,
title = {Laser bandwidth interlock capable of single pulse detection and rejection},
author = {Armstrong, James P and Telford, Steven James and Lanning, Rodney Kay and Bayramian, Andrew James},
abstractNote = {A pulse of laser light is switched out of a pulse train and spatially dispersed into its constituent wavelengths. The pulse is collimated to a suitable size and then diffracted by high groove density multilayer dielectric gratings. This imparts a different angle to each individual wavelength so that, when brought to the far field with a lens, the colors have spread out in a linear arrangement. The distance between wavelengths (resolution) can be tailored for the specific laser and application by altering the number of times the beam strikes the diffraction gratings, the groove density of the gratings and the focal length of the lens. End portions of the linear arrangement are each directed to a respective detector, which converts the signal to a 1 if the level meets a set-point, and a 0 if the level does not. If both detectors produces a 1, then the pulse train is allowed to propagate into an optical system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {10}
}

Patent:

Save / Share: