• Michael McCulloch

    Laser Spectroscopist, Cascade Technologies

    Michael McCulloch is a laser spectroscopist at Cascade Technologies (Glasgow, Scotland).

    FIGURE 1. Raw data for background and transmission spectra of room air was recorded using a 1270-cm-1 QC laser with intrapulse spectroscopy. A 2000-ns pulse is applied to the laser resulting in a frequency chirp, which sweeps the laser through the spectroscopic transitions of interest. A 0.048-cm-1 germanium etalon signal confirms greater than 6-cm-1 single-mode tuning.
    Innovative spectroscopic techniques and advances in spectrometer hardware promise major performance and cost improvements in tunable diode-laser absorption gas sensors.
    March 1, 2005