Near-perfect diffraction grating rhomb
Patent
·
OSTI ID:5550906
This patent describes 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 removes 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.
- Assignee:
- Dept. of Energy, Washington, DC (USA)
- Patent Number(s):
- A; US 4977560
- Application Number:
- PPN: US 7-373532
- OSTI ID:
- 5550906
- Country of Publication:
- United States
- Language:
- English
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