Ring laser gyroscope having combined electrode and getter

Details Ring laser gyroscope having combined electrode and getter Ring laser gyroscope having combined electrode and getter

H - Electricity

01

S

H01S 3/036 (2006.01) G01C 19/66 (2006.01) H01S 3/038 (2006.01) H01S 3/083 (2006.01)

Patent

CA 2419911

An electrode and getter structure (37) for a ring laser gyroscope (10) that includes a frame (12) having a cavity (26) therein that contains a gain medium (55) and an electrode bore (40) extending from a surface (42) of the frame (12) to the cavity (26) includes a metalization layer (4') formed on the surface (42) of the frame (12). The metalization layer (44) includes an electrode (52) that is adjacent the electrode bore (40). A getter well (64) is sealed to the metalization layer (44) around the electrode bore (40), and a getter (72) is mounted in the getter well (64) spaced apart from the frame (12). The getter well (64) preferably is a hollow glass cylinder (63) having a closed end (66) and an open end (68) mounted to the metalization layer (44). A spring (46) preferably is retained in the getter well (64) by elastic forces in the spring (46) with the getter (72) being attached to the spring (46) and aligned with the electrode bore (40).

L'invention porte sur une structure d'électrode et de getter (37) pour un gyrolaser annulaire (10) comprenant un cadre (12) ayant une cavité (26) contenant un support de gain (55) et un alésage d'électrode (40) s'étendant d'une surface (42) du cadre (12) vers la cavité (26) et comportant une couche de métallisation formée sur la surface (42) du cadre (12). La couche de métallisation (44) comprend une électrode (52) adjacente à l'alésage d'électrode (40). Un puits de getter (64) est scellé avec la couche de métallisation (44) autour de l'alésage d'électrode (40) et un getter (72) est monté dans le puits de getter (64) écarté du cadre (12). Le puits (64) est de préférence un cylindre de verre creux (63) ayant une extrémité fermée (66) et une extrémité ouverte (68) montées sur la couche de métallisation (44). Un ressort (46) est retenu de préférence dans le puits (64) par des forces élastiques, le getter (72) étant fixé au ressort (46) et aligné sur l'alésage d'électrode (40).

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