H - Electricity
01
S
345/10
H01S 3/083 (2006.01) G01C 19/66 (2006.01) H01S 3/097 (2006.01) H01S 3/0975 (2006.01) H01S 3/22 (2006.01)
Patent
CA 1309155
Edin 643/DNB ABSTRACT RING LASER A ring laser comprises a block (10) of dielectric material in which are formed a number of passages (11) defining a closed polygonal path. A gaseous active medium which are closed by mirrors (12). Two electrodes (16) are arranged external to the passage parallel to and on opposite sides of part or all of at least one of the passages (11). In operation the electrodes (10) are capacitively coupled to the gaseous active medium to produce an electric discharge therein transverse to the direction of the passage by the application to electrodes (16) of a high-frequency alternating voltage.
527771
Mcnaught William G.
Ross Iain E.
Ferranti International Plc
Ferranti International Signal Plc
Fetherstonhaugh & Co.
Laser Ecosse Limited
Mcnaught William G.
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