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Title: Waveguides having patterned, flattened modes

Abstract

Field-flattening strands may be added to and arbitrarily positioned within a field-flattening shell to create a waveguide that supports a patterned, flattened mode. Patterning does not alter the effective index or flattened nature of the mode, but does alter the characteristics of other modes. Compared to a telecom fiber, a hexagonal pattern of strands allows for a three-fold increase in the flattened mode's area without reducing the separation between its effective index and that of its bend-coupled mode. Hexagonal strand and shell elements prove to be a reasonable approximation, and, thus, to be of practical benefit vis-a-vis fabrication, to those of circular cross section. Patterned flattened modes offer a new and valuable path to power scaling.

Inventors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1224435
Patent Number(s):
9,170,367
Application Number:
13/804,252
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Mar 14
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Messerly, Michael J., Pax, Paul H., and Dawson, Jay W. Waveguides having patterned, flattened modes. United States: N. p., 2015. Web.
Messerly, Michael J., Pax, Paul H., & Dawson, Jay W. Waveguides having patterned, flattened modes. United States.
Messerly, Michael J., Pax, Paul H., and Dawson, Jay W. Tue . "Waveguides having patterned, flattened modes". United States. doi:. https://www.osti.gov/servlets/purl/1224435.
@article{osti_1224435,
title = {Waveguides having patterned, flattened modes},
author = {Messerly, Michael J. and Pax, Paul H. and Dawson, Jay W.},
abstractNote = {Field-flattening strands may be added to and arbitrarily positioned within a field-flattening shell to create a waveguide that supports a patterned, flattened mode. Patterning does not alter the effective index or flattened nature of the mode, but does alter the characteristics of other modes. Compared to a telecom fiber, a hexagonal pattern of strands allows for a three-fold increase in the flattened mode's area without reducing the separation between its effective index and that of its bend-coupled mode. Hexagonal strand and shell elements prove to be a reasonable approximation, and, thus, to be of practical benefit vis-a-vis fabrication, to those of circular cross section. Patterned flattened modes offer a new and valuable path to power scaling.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 27 00:00:00 EDT 2015},
month = {Tue Oct 27 00:00:00 EDT 2015}
}

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Works referenced in this record:

Flat-topped beam output from a double-clad rectangular dielectric waveguide laser with a high-index inner cladding
journal, June 2009