TA13 10min11:55
MEASUREMENTS OF GROUND STATE OXYGEN, WATER VAPOR AND TEMPERATURE IN CHEMICAL OXYGEN-IODINE LASER BY TI:SAPPHIRE LASER-BASED INTRACAVITY LASER SPECTROSCOPY.

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.