Details

Autor(en) / Beteiligte

• Ulrich, A
• Gernhäuser, R
• Krötz, W
• Wieser, J
• Murnick, DE

Titel

Ion-atom charge-transfer system for a heavy-ion-beam pumped laser

Ist Teil von

• Physical review. A, Atomic, molecular, and optical physics, 1994-08, Vol.50 (2), p.1931-1934

Ort / Verlag

United States

Erscheinungsjahr

1994

Quelle

American Physical Society

Beschreibungen/Notizen

• A general pumping method was proposed that is well suited for conditions in studying heavy-ion-beam pumped short-wavelength laser systems. The scheme was based on the application of two steps for effectual population of specific levels in ionized target species. It was determined that in situ production of target ions and succeeding charge transfer can lead to selective population of excited levels in a heavy-ion-beam excited target. Low temperatures and recoil ion velocities promote small Doppler broadening of the emission lines. Population densities of the lower levels of the transitions could be estimated from line intensities. Gain estimates for a laser experiment were found encouraging based on data obtained. Calculations were carried out using a model program designed to predict the parameters for a mode-locked Ar-Cs charge transfer laser on 349-nm line employing an accessible 15-MeV/u Bi beam for pumping. Approximately 1% of the initially formed Ar super(2+) ion density will emerge as upper laser level density after the < 1-ns beam pulses, leading to about 5% gain per pass.