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US 5,208,825 AGranted
Random polarization gas laser tube
AssigneeNEC Corporation
InventorHiroyuki Ishihara
Life of this patent
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Abstract
In a random polarization gas laser tube, a pair of mirrors constituting an optical resonator have anisotropic characteristics and aligned such that directions showing highest reflection intensity are orthogonal to each other to obtain a stable polarizing characteristics.
Claims2
A random polarization gas laser tube comprising:
- a tube defining an envelope filled with laser gas;
- a pair of electrodes provided in the envelope to discharge said gas;
- and
- a pair of mirrors, each of the mirrors having an anisotropic reflection intensity wherein the reflection intensity varies with the angular orientation of the mirror and is highest in a first direction, the mirrors being respectively positioned on opposite ends of the tube with the direction of highest reflection intensity of one of the mirrors being orthogonal to the direction of highest reflection intensity of the other mirror, whereby the laser tube polarization characteristics are stabilized.
1 more element
Dependencies are inferred from the claim text.