title: Simple locking of infrared and ultraviolet diode lasers to a visible laser using a LabVIEW proportional-integral-derivative controller on a Fabry-Perot signal.
abstract: Simultaneous laser locking of infrared (IR) and ultraviolet lasers to a visible stabilized reference laser is demonstrated via a Fabry-Perot (FP) cavity. LabVIEW is used to analyze the input, and an internal proportional-integral-derivative algorithm converts the FP signal to an analog locking feedback signal. The locking program stabilized both lasers to a long term stability of better than 9 MHz, with a custom-built IR laser undergoing significant improvement in frequency stabilization. The results of this study demonstrate the viability of a simple, computer-controlled, non-temperature-stabilized FP locking scheme for our applications, laser cooling of Ca(+) ions, and its use in other applications with similar modest frequency stabilization requirements.
authors.affiliation: Physics Department, University of Connecticut, Storrs, Connecticut 06269, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Kwolek
authors.affiliation: Physics Department, University of Connecticut, Storrs, Connecticut 06269, USA.
authors.forename: J E
authors.initials: JE
authors.lastname: Wells
authors.affiliation: Physics Department, University of Connecticut, Storrs, Connecticut 06269, USA.
authors.forename: D S
authors.initials: DS
authors.lastname: Goodman
authors.affiliation: Physics Department, University of Connecticut, Storrs, Connecticut 06269, USA.
authors.forename: W W
authors.initials: WW
authors.lastname: Smith