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Title: Apparatus for conversion of whispering-gallery modes into a free space Gaussian like beam

Patent Application ·
OSTI ID:10162713

An optical converter for efficient conversion of millimeter wavelength whispering-gallery gyrotron output into a linearly polarized, free-space Gaussian-like beam. 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.

Research Organization:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-48
Assignee:
Dept. of Energy
Patent Number(s):
PATENTS-US-A7711693
Application Number:
ON: DE93015707
OSTI ID:
10162713
Resource Relation:
Other Information: PBD: 1991
Country of Publication:
United States
Language:
English