dorsal/arxiv
View SchemaThe effects of the pre-pulse on capillary discharge extreme ultraviolet laser
| Authors | M. Shuker, A. Ben-kish, R. A. Nemirovsky, A. Fisher, A. Ron |
|---|---|
| Categories | |
| ArXiv ID | physics/0512003 |
| URL | https://arxiv.org/abs/physics/0512003 |
| DOI | 10.1063/1.2159465 |
| Journal | Phys. Plasmas, 13, 013102 (2006).. |
Abstract
In the past few years collisionally pumped extreme ultraviolet (XUV) lasers utilizing a capillary discharge were demonstrated. An intense current pulse is applied to a gas filled capillary, inducing magnetic collapse (Z-pinch) and formation of a highly ionized plasma column. Usually, a small current pulse (pre-pulse) is applied to the gas in order to pre-ionize it prior to the onset of the main current pulse. In this paper we investigate the effects of the pre-pulse on a capillary discharge Ne-like Ar XUV laser (46.9nm). The importance of the pre-pulse in achieving suitable initial conditions of the gas column and preventing instabilities during the collapse is demonstrated. Furthermore, measurements of the amplified spontaneous emission (ASE) properties (intensity, duration) in different pre-pulse currents revealed unexpected sensitivity. Increasing the pre-pulse current by a factor of two caused the ASE intensity to decrease by an order of magnitude - and to nearly disappear. This effect is accompanied by a slight increase in the lasing duration. We attribute this effect to axial flow in the gas during the pre-pulse.
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"abstract": "In the past few years collisionally pumped extreme ultraviolet (XUV) lasers\nutilizing a capillary discharge were demonstrated. An intense current pulse is\napplied to a gas filled capillary, inducing magnetic collapse (Z-pinch) and\nformation of a highly ionized plasma column. Usually, a small current pulse\n(pre-pulse) is applied to the gas in order to pre-ionize it prior to the onset\nof the main current pulse. In this paper we investigate the effects of the\npre-pulse on a capillary discharge Ne-like Ar XUV laser (46.9nm). The\nimportance of the pre-pulse in achieving suitable initial conditions of the gas\ncolumn and preventing instabilities during the collapse is demonstrated.\nFurthermore, measurements of the amplified spontaneous emission (ASE)\nproperties (intensity, duration) in different pre-pulse currents revealed\nunexpected sensitivity. Increasing the pre-pulse current by a factor of two\ncaused the ASE intensity to decrease by an order of magnitude - and to nearly\ndisappear. This effect is accompanied by a slight increase in the lasing\nduration. We attribute this effect to axial flow in the gas during the\npre-pulse.",
"arxiv_id": "physics/0512003",
"authors": [
"M. Shuker",
"A. Ben-kish",
"R. A. Nemirovsky",
"A. Fisher",
"A. Ron"
],
"categories": [
"physics.plasm-ph"
],
"doi": "10.1063/1.2159465",
"journal_ref": "Phys. Plasmas, 13, 013102 (2006)..",
"title": "The effects of the pre-pulse on capillary discharge extreme ultraviolet laser",
"url": "https://arxiv.org/abs/physics/0512003"
},
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