title: Real-time FPGA data collection of pulsed-laser cavity ringdown signals.
abstract: This paper presents results from a pulsed-laser cavity ring-down spectrometer with novel field programable gate array real-time data collection. We show both theoretically and experimentally that the data extraction can be achieved from a single cavity ringdown event, and that the absorbance can be determined without the need to fit the ringdown time explicitly. This methodology could potentially provide data acquisition rate up to 1 MHz, with the accuracy and precision comparable to nonlinear least squares fitting algorithms.
authors.affiliation: Loyola University New Orleans, New Orleans, LA 70118, USA. tgspence@loyno.edu
authors.forename: T G
authors.initials: TG
authors.lastname: Spence
authors.forename: M E
authors.initials: ME
authors.lastname: Calzada
authors.forename: H M
authors.initials: HM
authors.lastname: Gardner
authors.forename: E
authors.initials: E
authors.lastname: Leefe
authors.forename: H B
authors.initials: HB
authors.lastname: Fontenot
authors.forename: L
authors.initials: L
authors.lastname: Gilevicius
authors.forename: R W
authors.initials: RW
authors.lastname: Hartsock
authors.forename: T K
authors.initials: TK
authors.lastname: Boyson
authors.forename: C C
authors.initials: CC
authors.lastname: Harb