Lawrence Livermore National Security, LLC

Sheldon Shao Quan Wu

Thomas Frederick Soules

Raymond John Beach

Ralph Henry Page

Eddy Stappaerts

In one embodiment, a laser oscillator is provided comprising an optical cavity, the optical cavity including a gain medium including an alkali vapor and a buffer gas, the buffer gas includingHe gas, wherein ifHe gas is also present in the buffer gas, the ratio of the concentration of theHe gas to theHe gas is greater than 1.37&#xd7;10. Additionally, an optical excitation source is provided. Furthermore, the laser oscillator is capable of outputting radiation at a first frequency. In another embodiment, an apparatus is provided comprising a gain medium including an alkali vapor and a buffer gas includingHe gas, wherein ifHe gas is also present in the buffer gas, the ratio of the concentration of theHe gas to theHe gas is greater than 1.37&#xd7;10. Other embodiments are also disclosed.

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Livermore, CA, United States of America

Sheldon Shao Quan Wu