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 Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1079477
- Patent Number(s):
- 8284809
- Application Number:
- 12/729,138
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
- 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 = {Tue Oct 09 00:00:00 EDT 2012},
month = {Tue Oct 09 00:00:00 EDT 2012}
}