Abstract
Techniques are presented for obtaining stable, single mode output from an optical parametric oscillator and for aligning such an oscillator with a molecular or atomic transition. A line width of 10−3 cm−1 or less was obtained with a long term frequency stability of 10−3 cm−1 or better. It has been demonstrated that an OPO can stay aligned for several hours with an absorption line of half-width 0.01 cm−1.
© 1974 Optical Society of America
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