Abstract

A cw laser using F2+ centers in KF, continuously tunable over the range 1.26 ≤ λ ≤ 1.48 μm and having a measured slope efficiency of 30%, is described. A selective, two-step photoionization process was used to provide the required F2+-center density. Also, preliminary report is made of an F2+-center laser in LiF having cw outputs in excess of 1 W.

© 1978 Optical Society of America

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