Optical apparatus for conversion of whispering-gallery modes into a free space gaussian like beam
Patent
·
OSTI ID:7071914
An optical converter for efficient conversion of millimeter wavelength whispering-gallery gyrotron output into a linearly polarized, free-space Gaussian-like beam is described. The converter uses a mode-converting taper and three mirror optics. The first mirror has an azimuthal tilt to eliminate the k[sub [phi]] component of the propagation vector of the gyrotron output beam. The second mirror has a twist reflector to linearly polarize the beam. The third mirror has a constant phase surface so the converter output is in phase. 20 figs.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5115482; A
- Application Number:
- PPN: US 7-711693
- OSTI ID:
- 7071914
- Country of Publication:
- United States
- Language:
- English
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