High power cesium lamp system for laser pumping

Details High power cesium lamp system for laser pumping High power cesium lamp system for laser pumping

H - Electricity

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H01S 3/092 (2006.01) H01J 61/22 (2006.01) H01J 61/34 (2006.01) H01S 3/042 (2006.01) H01S 3/093 (2006.01)

Patent

CA 1211091

HIGH POWER CESIUM LAMP SYSTEM FOR LASER PUMPING Abstract of the Disclosure A long-life cesium lamp is disposed within an evac- uable outer envelope surrounding a cesium lamp arc tube with their respective surfaces spaced a fixed distance apart so that a heat-transferring gas, such as helium, is disposed between the arc tube and the wall or the outer envelope. Fur- thermore, means are provided for cooling the outer envelope, such as by surrounding it with a water jacket. The resulting lamp system is capable of operating at higher levels of average lamp power and arc tube wall loading (watts/cm2) without caus- ing too low a cesium pressure, as would happen if one directly water-cooled the alumina arc tube, and without causing too high an alumina arc tube temperature, as would happen if one merely evacuated the outer envelope. The lamp system of the present invention is also employed in a housing in which the lamps are disposed along the foci or a dual-elliptical cavity so that light emissions from the lamps are focussed upon a slab of lasing material, so as to form, for example, a neodymium-YAG laser.

431412

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