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Title: Waveguide design for line selection in fiber lasers and amplifiers

Abstract

Rare earth doped fiber lasers can be robust and efficient sources of high quality light, but are usually limited to the highest gain transitions of the active species. But rare earths typically possess a multitude of potentially useful transitions that might be accessed if the dominant transition can be suppressed. In fiber lasers this suppression is complicated by the very high net gain the dominant transitions exhibit; effective suppression requires some mechanism distributed along the length of the fiber. We have developed a novel waveguide with resonant leakage elements that frustrate guidance at well-defined and selectable wavelengths. Based on this waveguide, we have fabricated a Large Mode Area Neodymium doped fiber with suppression of the four-level transition around 1060 nm, and demonstrated lasing on the three-level transition at 930 nm with good efficiency.

Inventors:
; ; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1464121
Patent Number(s):
10033148
Application Number:
15/288,590
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Oct 07
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Pax, Paul H., Allen, Graham S., Dawson, Jay W., Drachenberg, Derrek Reginald, Khitrov, Victor V., Messerly, Michael J., and Schenkel, Nick. Waveguide design for line selection in fiber lasers and amplifiers. United States: N. p., 2018. Web.
Pax, Paul H., Allen, Graham S., Dawson, Jay W., Drachenberg, Derrek Reginald, Khitrov, Victor V., Messerly, Michael J., & Schenkel, Nick. Waveguide design for line selection in fiber lasers and amplifiers. United States.
Pax, Paul H., Allen, Graham S., Dawson, Jay W., Drachenberg, Derrek Reginald, Khitrov, Victor V., Messerly, Michael J., and Schenkel, Nick. Tue . "Waveguide design for line selection in fiber lasers and amplifiers". United States. https://www.osti.gov/servlets/purl/1464121.
@article{osti_1464121,
title = {Waveguide design for line selection in fiber lasers and amplifiers},
author = {Pax, Paul H. and Allen, Graham S. and Dawson, Jay W. and Drachenberg, Derrek Reginald and Khitrov, Victor V. and Messerly, Michael J. and Schenkel, Nick},
abstractNote = {Rare earth doped fiber lasers can be robust and efficient sources of high quality light, but are usually limited to the highest gain transitions of the active species. But rare earths typically possess a multitude of potentially useful transitions that might be accessed if the dominant transition can be suppressed. In fiber lasers this suppression is complicated by the very high net gain the dominant transitions exhibit; effective suppression requires some mechanism distributed along the length of the fiber. We have developed a novel waveguide with resonant leakage elements that frustrate guidance at well-defined and selectable wavelengths. Based on this waveguide, we have fabricated a Large Mode Area Neodymium doped fiber with suppression of the four-level transition around 1060 nm, and demonstrated lasing on the three-level transition at 930 nm with good efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}

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