Laser cavities with gas flow through the electrodes

Details Laser cavities with gas flow through the electrodes Laser cavities with gas flow through the electrodes

H - Electricity

01

S

345/38

H01S 3/097 (2006.01) H01S 3/22 (2006.01)

Patent

CA 1049641

LASER CAVITIES WITH GAS PLOW THROUGH THE ELECTRODES ABSTRACT OF THE DISCLOSURE A uniform field electrode arrangement for exciting a laser gas in a high pressure pulsed gas laser apparatus so constructed to facilitate discharge initiation and smooth laminar gas flow. The geometry of the electrode assembly provides for laminar gas flow through the discharge volume providing an optically homogeneous lasing medium. Discharge initiation for pulsed operation is achieved using, for example, ultraviolet irradiation of the electrode assembly, corona discharge devices and radioisotope irradiation of the electrode assembly. Independent of the type of initiatory discharge device used, the geometry of the assembly allows for efficient supply of initiating electrons to the discharge gap without interference with smooth gas flow through the optical cavity. Mesh electrodes can be used to facilitate gas flow in a direction parallel with the direction of elec- trical discharge.

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