Near-perfect diffraction grating rhomb

Patent · Mon Jan 01 04:00:00 EST 1990

OSTI ID:867644

Wantuck, Paul J ^[1]

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1. Santa Fe, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4977560
• OSTI ID: 867644
• Country of Publication: United States
• Language: English

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differs
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diffraction
diffraction grating
dispersing
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effective
enables
grating
grating rhomb
groove
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input
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substantially
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