Near-perfect diffraction grating rhomb

Patent · Mon Jan 01 00:00:00 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 (United States)
• 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

Related Subjects

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
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