Abstract

We demonstrate theoretically the feasibility of 19.9-nm lasing on the Li⁺ 1s2p ¹P → 1s² transition in Li vapor pumped by a short, noncoherent soft-x-ray pulse with the narrow-band spectrum centered at the [1s(3s3p) ³P] ²P° resonance of neutral Li (≃71 eV). Broadband pumping of 1s²2p-excited Li atoms is also briefly discussed.

© 1992 Optical Society of America

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