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M. P. FROLOV, YU. P. PODMARKOV, Lebedev Physical Institute, Leninsky pr. 53, Moscow, 117924 Russia.
The ground state oxygen and water vapor are important species in chemical oxygen-iodine laser. The detectivity required in the chemical oxygen-iodine laser device is about 0.03 Torr for both H2O and O2(X). We have shown that these parameters and the temperature of chemical oxygen-iodine laser medium can be measured by intracavity laser spectroscopy based on simple standing wave Ti:sapphire laser. Using 120-µs laser generation time, we have demonstrated the detection sensitivities to be 6· 1014 and 3· 1014 cm-3 for H2O and O2(X), respectively. The oxygen concentration measurement error does not exceed 5% in the range 2· 1015--1016 cm-3. The temperature measurement error does not exceed 25K in the range 200-500K.