Enhancement of short-pulse recombination-pumped gain by soft-x-ray photoionization of the ground state

Journal Article · Thu Feb 01 00:00:00 EST 1996 · Journal of the Optical Society of America, Part B: Optical Physics

DOI:https://doi.org/10.1364/JOSAB.13.000443· OSTI ID:285888

Apruzese, J P ^[1]; Umstadter, D ^[2]

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1. Radiation Hydrodynamics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375 (United States)
2. Center for Ultrafast Optical Sciences, University of Michigan, Ann Arbor, Michigan 48109 (United States)

The gain achieved in lasing to the ground state following short-pulse field ionization by a pump laser is highly transient. It will usually persist for only tens of picoseconds because of the rapid filling and negligible emptying of the ground state. Employing a detailed atomic model of lasing in hydrogen, we show that the removal of ground-state population by an appropriate broadband ionizing radiation field can enhance and prolong the gain in such a laser. {copyright} {ital 1996 Optical Society of America.}

• OSTI ID: 285888
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics, Vol. 13, Issue 2; Other Information: PBD: Feb 1996
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
X-RAY LASERS
DESIGN
PERFORMANCE
PULSE TECHNIQUES
GAIN
LASER-PRODUCED PLASMA
EXTREME ULTRAVIOLET RADIATION