Abstract
Abstract A tunable pulsed Ti: Sapphire laser was used to determine low concentrations using intracavity absorption spectroscopy with temporal resolution. The dependence of the laser-pulse evolution time on the absorbance of a sample introduced in the cavity (solution of 3,3-diethylthiatricarbocyanine iodide in dimethylsulphoxide) was studied theoretically and experimentally. The minimal experimentally measured absorbance was 8×10−4. The possibility was shown of using a Ti:S laser to detect absorbance of 10−5 via a temporal technique.
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