Coherent light generators – Particular pumping means – Electrical
Reexamination Certificate
2007-08-21
2007-08-21
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular pumping means
Electrical
C372S055000, C372S058000
Reexamination Certificate
active
10869964
ABSTRACT:
An slab CO2 laser includes spaced-apart elongated slab electrodes. A lasing gas fills a discharge gap between the electrodes. An RF power supply is connected across the electrodes and sustains an electrical discharge in the lasing gas in the discharge gap. Either one or two ceramic inserts occupy a portion of width of the electrodes and in contact with the electrodes. A discharge gap is formed between the portions of the width of the electrodes not occupied by the insert or inserts. Provision of the ceramic insert or inserts increases the resistance-capacitance (RC) time constant of the electrode impedance by increasing the capacitive component of the time constant. This hinders the formation of arcs in the discharge, which, in turn enables the inventive laser to operate with higher excitation power or higher lasing-gas pressure than would be possible without the dielectric insert. The ceramic insert also decreases the difference in impedance of the electrodes with and without a discharge. This leads to a better-behaved discharge, and a discharge that is easier to light.
REFERENCES:
patent: 3745481 (1973-07-01), Erickson et al.
patent: 3748594 (1973-07-01), Pugh
patent: 3828277 (1974-08-01), Otto et al.
patent: 4686682 (1987-08-01), Haruta et al.
patent: 4710941 (1987-12-01), Sluss et al.
patent: 4939738 (1990-07-01), Opower
patent: 5088102 (1992-02-01), Krueger et al.
patent: 5123028 (1992-06-01), Hobart et al.
patent: 5353297 (1994-10-01), Koop et al.
patent: 5379317 (1995-01-01), Bridges et al.
patent: 5982803 (1999-11-01), Sukhman et al.
patent: 6192061 (2001-02-01), Hart et al.
patent: 6363094 (2002-03-01), Morton et al.
patent: 2003/0058913 (2003-03-01), Shackleton et al.
patent: 40 07 588 (1991-09-01), None
patent: WO8706773 (1987-11-01), None
patent: WO8800403 (1988-01-01), None
patent: WO 00/21167 (2000-04-01), None
A.D. Colley et al., “High brightness slab waveguide carbon monoxide laser,”Appl. Phys. Lett.,vol. 64, No. 22, May 30, 1994, pp. 2916-2918.
J. Xin et al., “Radio frequency discharge excited diffusively cooled kilowatt carbon monoxide slab waveguide laser with a three mirror resonator,”Applied Physics Letters,vol. 75, No. 10, Sep. 6, 1999, pp. 1369-1370.
DeMaria Anthony J.
Gardner Phillip J.
Kennedy John T.
Seguin Vernon
Shackleton Christian J.
Coherent Inc.
Golub Marcia A.
Harvey Minsun
Stallman & Pollock LLP
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