Optical apparatus for conversion of whispering-gallery modes into a free space gaussian like beam

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868302

Stallard, Barry W ^[1]; Makowski, Michael A ^[1]; Byers, Jack A ^[2]

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1. Livermore, CA
2. Danville, CA

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 Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5115482
• OSTI ID: 868302
• Country of Publication: United States
• Language: English

Related Subjects

optical
apparatus
conversion
whispering-gallery
modes
free
space
gaussian
beam
converter
efficient
millimeter
wavelength
gyrotron
output
linearly
polarized
free-space
gaussian-like
mode-converting
taper
mirror
optics
azimuthal
tilt
eliminate
phi
component
propagation
vector
twist
reflector
polarize
third
constant
phase
surface
optical apparatus
output beam
linearly polarized
free space
millimeter wavelength
millimeter wave
efficient conversion
third mirror
optical converter
space gaussian
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