title: Heterodyne holographic interferometry: concentration and temperature measurements in gas mixtures.
abstract: Heterodyne holographic interferometry is employed to measure refractive-index distributions in transparent media. A system using a He-Ne laser and relatively modest electronic instrumentation is described. The system was used to measure temperature and specie-concentration distribution in natural convection boundary layers in air adjacent to heated surfaces through which a second gas is emitted or injected.
authors.affiliation: University of Michigan, Department of Mechanical Engineering & Applied Mechanics, Ann Arbor, Michigan 48109, USA.
authors.forename: P V
authors.initials: PV
authors.lastname: Farrell
authors.forename: G S
authors.initials: GS
authors.lastname: Springer
authors.forename: C M
authors.initials: CM
authors.lastname: Vest