Using LabVIEW to Synchronize an Infrared Diode Laser Spectrometer with a Pulsed Supersonic Jet Expansion

摘要

We describe software developed with LabVIEW to provide operational control for an in-house infrared diode laser spec- trometer that has been combined with a pulsed supersonic jet expansion sample source. Data were collected with this instru- ment using a modified version of the rapid-scanning method. A prerequisite in employing the rapid-scan detection scheme is that the modulation used to scan the laser be synchronized in time with the electrical signal used to trigger the pulsed gas valve. Software performance was evaluated by examining a series of rotation vibration (ro-vibrational) spectra for the carbon monox- Ide molecule in the five micron region of the infrared.