Proof of the Feasibility of Coherent and Incoherent Schemes for Pumping a Gamma-Ray Laser
Annual letter rept. 24 Dec 1989-23 Dec 1990,
TEXAS UNIV AT DALLAS RICHARDSON CENTER FOR QUANTUM ELECTRONICS
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The most productive approaches to the problem of the gamma-ray laser have focused upon upconversion techniques in which metastable nuclei are pumped with long wavelength radiation. At the nuclear level the storage of energy can approach tera-Houles per liter for thousands of years. This annual report focuses upon our approach that is the nuclear analog to the ruby laser. It embodies the simplest concepts for a gamma-ray laser and not surprisingly, the greatest rate of achievement in the quest for a subAngstrom laser was realized in that direction. For ruby the identification and exploitation of a bandwidth funnel were the critical keys in the development of the first laser. There was a broad absorption band linked through efficient cascading to the narrow laser level. The current report focused upon two issues. The first concerned the extent to which the breakthrough discovery of the giant pumping resonances would alter the prescription for a gamma-ray laser formulated nearly a decade ago. Detailed in the first preprint is the recomputation of the model for a realistic device. The second emphasis fell upon experiments we conducted to pinpoint the excitation energies of the resonances for 180Ta and 123Te.
- Lasers and Masers