title: Intracavity double resonance on optically pumped submillimeter lasers.
abstract: The double resonance on the active medium of a far-infrared laser is discussed, and experimental results on methanol are presented. The intensity and polarization-selection rules are presented. The K doubling in the K = 4 levels of the first-excited-CO stretch state is measured for the first reported time.
authors.affiliation: Istituto di Fisica dell' Universitá, Pisa, Italy, and Gruppo Nazionale di Struttura della Materia del Consiglio Nazionale delle Ricerche, Pisa, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Arimondo
authors.forename: M
authors.initials: M
authors.lastname: Inguscio
authors.forename: A
authors.initials: A
authors.lastname: Moretti
authors.forename: M
authors.initials: M
authors.lastname: Pellegrino
authors.forename: F
authors.initials: F
authors.lastname: Strumia