title: Spatially resolved infrared absorption measurements: application of an optical Stark effect.
abstract: A new technique for obtaining point measurements in gases by infrared absorption is described. The method is based on a recently discovered quadratic Stark effect on vibrational and rotational molecular transitions that is induced by high-intensity optical fields. Detectivity calculations for CO, an important combustion gas, are presented together with a proof-of-principle demonstration of Stark-induced absorption in ammonia.
authors.forename: R L
authors.initials: RL
authors.lastname: Farrow
authors.forename: L A
authors.initials: LA
authors.lastname: Rahn