Статья

Demonstration of a narrow-divergence x-ray laser in neonlike titanium

T. R. BoehlyLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623M. RussottoLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623R. S. CraxtonLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623R. EpsteinLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623B. YaakobiLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623L. B. Da SilvaLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623Joseph NilsenLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623E. A. ChandlerLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623D. J. FieldsLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623B. J. MacGowanLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623D. L. MatthewsLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623J. H. ScofieldLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623G. ShimkavegLaboratory for Laser Energetics, University of Rochester, Rochester, New York 14623

1990en

ABI

Аннотация

We report an observation of soft-x-ray lasing in Ti, at 326.5 \AA{}, based on recent experiments conducted on the Glass Development Laser (1.054 \ensuremath{\mu}m) at the Laboratory for Laser Energetics and the Nova laser (0.53 \ensuremath{\mu}m) at Lawrence Livermore National Laboratory. This Ti laser, which has been identified as a 3p\ensuremath{\rightarrow}3s transition in Ne-like Ti, is unusual in several ways; the J=0\ensuremath{\rightarrow}1, 3p\ensuremath{\rightarrow}3s transition is observed to be the dominant laser line in a Ne-like spectrum, the laser output has a very narrow divergence, and lasing is observed only in experiments where the main optical pulse is preceded by a low-intensity prepulse. We describe the experimental results and present evidence that suggests the gain is enhanced by resonant photopumping of the Ne-like Ti 2p\ensuremath{\rightarrow}4d transitions by 3s\ensuremath{\rightarrow}2p C-like and 3d\ensuremath{\rightarrow}2p N-like Ti lines, which results in lasing on the 3p\ensuremath{\rightarrow}3s transitions in Ne-like Ti.

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Идентификаторы

DOI: 10.1103/physreva.42.6962

Цитирования и источники

Цитирований: 2Использованных источников: 0

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