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

Title: Self-seeded single-frequency laser peening method

Abstract

A method of operating a laser to obtain an output pulse having a single wavelength, comprises inducing an intracavity loss into a laser resonator having an amount that prevents oscillation during a time that energy from the pump source is being stored in the gain medium. Gain is built up in the gain medium with energy from the pump source until formation of a single-frequency relaxation oscillation pulse in the resonator. Upon detection of the onset of the relaxation oscillation pulse, the intracavity loss is reduced, such as by Q-switching, so that the built-up gain stored in the gain medium is output from the resonator in the form of an output pulse at a single frequency. An electronically controllable output coupler is controlled to affect output pulse characteristics. The laser acts a master oscillator in a master oscillator power amplifier configuration. The laser is used for laser peening.

Inventors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1054086
Patent Number(s):
8,207,474
Application Number:
12/506,530
Assignee:
Metal Improvement Company, LLC (Paramus, NJ); Regents of the University of California (Oakland, CA); Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
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, Hackey, Lloyd A, and Harris, Fritz B. Self-seeded single-frequency laser peening method. United States: N. p., 2012. Web.
DAne, C Brent, Hackey, Lloyd A, & Harris, Fritz B. Self-seeded single-frequency laser peening method. United States.
DAne, C Brent, Hackey, Lloyd A, and Harris, Fritz B. Tue . "Self-seeded single-frequency laser peening method". United States. doi:. https://www.osti.gov/servlets/purl/1054086.
@article{osti_1054086,
title = {Self-seeded single-frequency laser peening method},
author = {DAne, C Brent and Hackey, Lloyd A and Harris, Fritz B},
abstractNote = {A method of operating a laser to obtain an output pulse having a single wavelength, comprises inducing an intracavity loss into a laser resonator having an amount that prevents oscillation during a time that energy from the pump source is being stored in the gain medium. Gain is built up in the gain medium with energy from the pump source until formation of a single-frequency relaxation oscillation pulse in the resonator. Upon detection of the onset of the relaxation oscillation pulse, the intracavity loss is reduced, such as by Q-switching, so that the built-up gain stored in the gain medium is output from the resonator in the form of an output pulse at a single frequency. An electronically controllable output coupler is controlled to affect output pulse characteristics. The laser acts a master oscillator in a master oscillator power amplifier configuration. The laser is used for laser peening.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 26 00:00:00 EDT 2012},
month = {Tue Jun 26 00:00:00 EDT 2012}
}

Patent:

Save / Share: