SINGLET DELTA OXYGEN PROVIDES A SOURCE OF ELECTRONIC ENERGY FOR CHEIMICALLY PUMPED LASER SYSTEMS, MOST NOTABLY THE OXYGEN-IODINE LASER.

SINGLET DELTA OXYGEN PROVIDES A SOURCE OF ELECTRONIC ENERGY FOR CHEIMICALLY PUMPED LASER SYSTEMS, MOST NOTABLY THE OXYGEN-IODINE LASER. SEVERAL IMPORTANT REACTIONS IN THE OXYGEN-IODINE LASER MAY DEPEND CRITICALLY ON THE AMOUNT OF VIBRATIONAL EXCITATION IN THE G STATE. IN THIS PROPOSAL, WE EVALUATE SEVERAL TECHNIQUES FOR MEASURING THE POPULATION OF VIBRATIONALLY EXCITED O G. THE LASERINDUCED EMISSION (LIE) DETECTION METHOD IS SELECTED BECAUSE OF SUPERIOR SIGNAL-TO-NOISE CHARACTERISTICS AND EXCELLENT SENSITIVITY. THE LIE DETECTOR FOR 0 G CONSISTS OF A PHOTODETECTOR AND A TUNABLE, PULSED LASER OPERATING IN THE NEIGHBORHOOD OF 1.9UM, THE WAVELENGTH REQUIRED FOR EXCITATION OF THE G G ELECTRONIC TRANSITION IN 0 . THE NARROW BANDWIDTH OF THE LASER WILL ALLOW SELECTIVE EXCITATION OF ROTATIONAL STATES IN THE V = O OR V = 1 LEVEL OF 0 G. EMISSION FROM THE G G TRANSITION, MODULATED BY THE 10 HZ LASER, WILL BE SYNCHRONOUSLY DETECTED. IN PHASE I, THE TUNABLE LASER WILL BE CONSTRUCTED AND THE SENSITIVITY OF LIE DETECTION FOR O G WILL BE EVALUATED.