Polarisation and Mode Selection Technique for a Laser
AssigneeLuxinar Ltd.
InventorsPeter Edward Dyer, Jason Robert Lee, Gavin Alan James Markillie
Life of this patent
Estimating the term…
Abstract
A polarisation and mode selection technique for a gas waveguide laser is described in which a surface of the waveguide is formed to be substantially dielectric with a localised metallic region therein. The metallic region provides linear polarisation while the dielectric surface provides for low order mode selection. Embodiments are described to channel and planar waveguides with various resonator configurations. Ranges are provided for the size and location of the metallic region on the waveguide surface.
Claims20
A laser comprising first and second surfaces separated to form a waveguide on a first axis between said surfaces;
- a discharge region contained within at least a portion of said waveguide;
- a resonant cavity having a propagation axis orthogonal to said first axis;
- and characterised in that the first surface is a substantially dielectric surface including a localised metallic region therein.
A method of providing a polarisation and mode selective laser, comprising the steps:
- a) providing first and second surfaces which can be arranged to form a waveguide therebetween;
- b) providing a resonant cavity around said waveguide;
- c) creating a gas discharge within at least a portion of said waveguide;
- characterised in that:
- the first surface comprises a substantially dielectric surface including a localised metallic region therein.
Dependencies are inferred from the claim text.