Abstract

A single-cavity solid-state laser that is resonant with sodium D ₂ absorption is reported. Simultaneous 1.06- and 1.32-μm emission from a Q-switched Nd:YAG laser is summed with an intracavity type II KTP crystal. A single-intracavity étalon is sufficient to provide a time-averaged linewidth of 1.7 GHz at 589 nm.

© 1995 Optical Society of America

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