title: Characteristics of the optical parametric oscillator and its use for selective excitation.
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).
authors.forename: A
authors.initials: A
authors.lastname: Hordvik
authors.forename: P B
authors.initials: PB
authors.lastname: Sackett