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Optical Engineering

Reinterpretation of the neon-like titanium laser experiments
Author(s): Joseph Nilsen; Brian J. MacGowan; Luiz Barroca Da Silva; Juan C. Moreno; Jeffrey A. Koch; James H. Scofield
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Paper Abstract

We present results that show lasing on the 3p->3s (J = 0->1) transition in neon-like chromium (Z = 24), iron (Z = 26), and nickel (Z = 28) at 28.5, 25.5, and 23.1 nm, respectively. These results destroy the uniqueness of the lasing observed several years ago in neon-like titanium (Z = 22) at 32.6 nm on the same transition and makes highly unlikely the hypothesis that resonant photopumping is playing a significant role in the titanium laser. The titanium, chromium, iron, and nickel experiments all require a prepulse in order to lase, and our calculations suggest that the prepulse is an exciting new way to create a uniform low-density plasma that allows the proper conditions for gain and laser propagation for low-Zneon-like ions when illuminating a thick slab target. We also present an observation of hyperfine splitting in neon-like niobium at 14.6 nm and offer an explanation as to how the hyperfine effect is reducing the gain of neon-like ions with odd Z.

Paper Details

Date Published: 1 August 1994
PDF: 5 pages
Opt. Eng. 33(8) doi: 10.1117/12.173558
Published in: Optical Engineering Volume 33, Issue 8
Show Author Affiliations
Joseph Nilsen, Lawrence Livermore National Lab. (United States)
Brian J. MacGowan, Lawrence Livermore National Lab. (United States)
Luiz Barroca Da Silva, Lawrence Livermore National Lab. (United States)
Juan C. Moreno, Lawrence Livermore National Lab. (United States)
Jeffrey A. Koch, Lawrence Livermore National Lab. (United States)
James H. Scofield, Lawrence Livermore National Lab. (United States)

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