H - Electricity – 01 – S
Patent
H - Electricity
01
S
345/38
H01S 3/03 (2006.01) H01S 3/038 (2006.01) H01S 3/041 (2006.01)
Patent
CA 1129531
LASER DEVICE UTILIZING HOLLOW CATHODE SEGMENTS OF SPECIFIC LENGTHS AND DIAMETERS ABSTRACT OF THE DISCLOSURE A laser device for generating multiline emmissions when appropriately energized. The device consists of two major components, an anode-cathode assembly and, in a first embodiment, an adjustable brewster end section or in a second embodiment, an integral mirror end section. The anode-cathode assembly comprises one center located short cylindrical anode and two segmented cylindrical hollow cathodes located symmetrically on each side of the anode, the inner diameter of the hollow cathodes being selected depending on the particular laser transition involved and particular output level required, the length of each cathode also being selected to adjust the gain of the selected laser transition. The anode and cathode are electrically insulated by a cylindrical metal ceramic seal. The outer surface of the cathode is covered with quartz insulating sleeves to prevent electrical discharge from the outer cathode sur- face and to encourage effective inner cathode discharge. The cathode is thermally connected to the external envi- ronment through a structure coupled to the cathode and the laser tube envelope thus allowing heat generated within the cathode due to the electrical discharge to be effectively dissipated away thereby allowing higher input power load into the cathode for selected lasing action which requires a relatively high excitation input. A metal vapor reservoir may be provided and is preferably attached to the anode section for metal vapor laser operation. -1/2-
335813
Hamerdinger Randolph W.
Wang Shing C.
Sim & Mcburney
Xerox Corporation
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