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Title: Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same

Abstract

A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-linear index of refraction, such as a perfluoro compound. An SBS relay telescope having a telescope focal point includes a baffle at the telescope focal point which blocks off angle beams. A beam splitter is placed between the SBS mirror system and the SBS relay telescope, directing a fraction of the beam to an alternate beam path for an alignment fiducial. The SBS mirror system has a collimated SBS cell and a focused SBS cell. An adjustable attenuator is placed between the collimated SBS cell and the focused SBS cell, by which pulse width of the reflected beam can be adjusted.

Inventors:
 [1];  [1];  [2]
  1. Livermore, CA
  2. Rocklin, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
908984
Patent Number(s):
7,209,500
Application Number:
10/766,635
Assignee:
Metal Improvement Company, LLC (Paramus, NJ) OAK
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Dane, C Brent, Hackel, Lloyd, and Harris, Fritz B. Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same. United States: N. p., 2007. Web.
Dane, C Brent, Hackel, Lloyd, & Harris, Fritz B. Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same. United States.
Dane, C Brent, Hackel, Lloyd, and Harris, Fritz B. Tue . "Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same". United States. doi:. https://www.osti.gov/servlets/purl/908984.
@article{osti_908984,
title = {Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same},
author = {Dane, C Brent and Hackel, Lloyd and Harris, Fritz B},
abstractNote = {A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-linear index of refraction, such as a perfluoro compound. An SBS relay telescope having a telescope focal point includes a baffle at the telescope focal point which blocks off angle beams. A beam splitter is placed between the SBS mirror system and the SBS relay telescope, directing a fraction of the beam to an alternate beam path for an alignment fiducial. The SBS mirror system has a collimated SBS cell and a focused SBS cell. An adjustable attenuator is placed between the collimated SBS cell and the focused SBS cell, by which pulse width of the reflected beam can be adjusted.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 24 00:00:00 EDT 2007},
month = {Tue Apr 24 00:00:00 EDT 2007}
}

Patent:

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  • A system for applying a laser beam to work pieces, includes a laser system producing a high power output beam. Target delivery optics are arranged to deliver the output beam to a target work piece. A relay telescope having a telescope focal point is placed in the beam path between the laser system and the target delivery optics. The relay telescope relays an image between an image location near the output of the laser system and an image location near the target delivery optics. A baffle is placed at the telescope focal point between the target delivery optics and themore » laser system to block reflections from the target in the target delivery optics from returning to the laser system and causing damage.« less
  • A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-linear index of refraction, such as a perfluoro compound. An SBS relay telescope having a telescope focal point includes a baffle at the telescope focal point which blocks off angle beams. A beam splitter is placed between the SBS mirror system and the SBS relay telescope, directing a fraction of the beam to an alternate beam path for anmore » alignment fiducial. The SBS mirror system has a collimated SBS cell and a focused SBS cell. An adjustable attenuator is placed between the collimated SBS cell and the focused SBS cell, by which pulse width of the reflected beam can be adjusted.« less
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