Title :
Transmission properties of spark preionization radiation in rare-gas halide laser gas mixes
Author :
Taylor, R.S. ; Leopold, K.E.
Author_Institution :
Inst. for Microstructural Sci., Nat. Res. Council of Canada, Ottawa, Ont., Canada
fDate :
12/1/1995 12:00:00 AM
Abstract :
A charge collection apparatus was used to measure photocharge yields and transmission properties of light emitted from a spark preionizer discharge through various rare-gas halide laser gas mixes as well as through their component gas mixes. The data indicates that for HCl partial pressure (p) and photon path length (d) pd products ⩾100 Torr-cm, a narrow transmission window (114-124 nm) for preionization of XeCl and KrCl lasers occurs. In contrast, fluorine based rare-gas halide laser gas mixes were largely transparent over a critical 100-150 nm spectral window responsible for preionization. The role of gaseous impurities, two photon ionization processes, the photoelectric effect, passivation and air contamination on the photocharge signal and light transmission are described
Keywords :
excimer lasers; gas mixtures; light transmission; photoelectricity; photoionisation; preionisation; sparks; 100 to 150 nm; HCI partial pressure; HCl; KrCl; KrCl lasers; XeCl; XeCl lasers; air contamination; charge collection apparatus; component gas mixes; excimer lasers; fluorine based rare-gas halide laser gas mixes; gaseous impurities; narrow transmission window; passivation; photocharge signal; photoelectric effect; photon path length; preionization; rare-gas halide laser gas mixes; spark preionization radiation; spark preionizer discharge; spectral window; transmission properties; transparent; two photon ionization processes; Charge measurement; Current measurement; Gas lasers; Impurities; Ionization; Partial discharges; Passivation; Photovoltaic effects; Pollution measurement; Sparks;
Journal_Title :
Quantum Electronics, IEEE Journal of
