title: Depletion optimization and photon efficiency in laser isotope separation of deuterium.
abstract: The depletion optimization of one of the isotopic components in a gas stream is considered, using a one-photon laser separation process, when the absorption path is in the kilometer range. A multiple-pass cylindrical geometry is proposed with the gas flowing through a tube enclosed by aspherical mirrors. Radiation is injected such that adjustment of the mirror parameters establishes a flux distribution which optimizes the depletion while it minimizes losses from incomplete absorption. The mirror parameters are derived and application to deuterium separation is discussed. This approach it also useful in optical amplifiers and resonators to maximize energy extraction.
authors.forename: J C
authors.initials: JC
authors.lastname: Vanderleeden