Coherent light generators – Particular pumping means – Electrical
Patent
1980-11-14
1982-06-15
Davie, James W.
Coherent light generators
Particular pumping means
Electrical
313198, 372 86, 372 87, H01S 3097
Patent
active
043354629
ABSTRACT:
This invention provides a laser or high voltage switch which has two spaced apart main discharge electrodes which define between them a main discharge gap, a discharge inducing member that is of an insulating material and which provides a planar or curved trigger discharge surface adjacent the electrodes and partially or completely bridging the main discharge gap, and an auxiliary conductor on the other side of the discharge inducing member to the main discharge electrodes and capacitively coupled to one of them by a distributed stray capacitance, such that when an excitation pulse is applied across the main discharge electrodes an initial capacitively initiated low order trigger discharge occurs onto the trigger discharge surface, and preferably across the surface from one main discharge electrode to the other. This trigger discharge photo-ionises a gas in the main discharge gap to cause a glow discharge between the main electrodes. The auxiliary conductor may be sheet like and may be either part of a pulsing circuit or it may be directly electrically coupled to one of the main discharge electrodes. The conductor may be shielded by a shielding member to vary the capacitive coupling between the conductor and the main discharge electrode. One or both of the main discharge electrodes may have a curved portion and a sharpened portion to induce a corona discharge.
REFERENCES:
patent: 3935547 (1976-01-01), Riemersma et al.
patent: 3992643 (1976-11-01), Vital et al.
patent: 4065370 (1977-12-01), Noble et al.
patent: 4085386 (1978-04-01), Farish et al.
patent: 4088965 (1978-05-01), Lauderslager et al.
patent: 4135167 (1979-01-01), Godard
Hasson et al., "Effective Glow Discharge Excitation of Nitrogen Lasers at Gas Pressures Ranging from 0 to 5 Bar", APL., vol. 28, No. 1, Jan. 1976, pp. 17-18.
Hasson Victor H.
Von Bergmann Hubertus M.
Davie James W.
The South African Inventions Development Corporation
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