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Title: Near-perfect diffraction grating rhomb

Abstract

A near-perfect grating rhomb enables an output beam to be diffracted to an angle offset from the input beam. The correcting grating is tipped relative to the dispersing grating to provide the offset angle. The correcting grating is further provided with a groove spacing which differs from the dispersing grating groove space by an amount effective to substantially remove angular dispersion in the output beam. A near-perfect grating rhomb has the capability for selective placement in a FEL to suppress sideband instabilities arising from the FEL.

Inventors:
 [1]
  1. Santa Fe, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
867644
Patent Number(s):
4977560
Assignee:
United States of America as represented by United States (Washington, DC)
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:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
near-perfect; diffraction; grating; rhomb; enables; output; beam; diffracted; angle; offset; input; correcting; tipped; relative; dispersing; provide; provided; groove; spacing; differs; space; amount; effective; substantially; remove; angular; dispersion; capability; selective; placement; suppress; sideband; instabilities; arising; substantially remove; input beam; diffraction grating; output beam; amount effective; grating rhomb; groove spacing; /372/

Citation Formats

Wantuck, Paul J. Near-perfect diffraction grating rhomb. United States: N. p., 1990. Web.
Wantuck, Paul J. Near-perfect diffraction grating rhomb. United States.
Wantuck, Paul J. Mon . "Near-perfect diffraction grating rhomb". United States. https://www.osti.gov/servlets/purl/867644.
@article{osti_867644,
title = {Near-perfect diffraction grating rhomb},
author = {Wantuck, Paul J},
abstractNote = {A near-perfect grating rhomb enables an output beam to be diffracted to an angle offset from the input beam. The correcting grating is tipped relative to the dispersing grating to provide the offset angle. The correcting grating is further provided with a groove spacing which differs from the dispersing grating groove space by an amount effective to substantially remove angular dispersion in the output beam. A near-perfect grating rhomb has the capability for selective placement in a FEL to suppress sideband instabilities arising from the FEL.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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