Small-signal gain and saturation parameter of a transverse-flow CW oxygen-iodine laser

History of COIL development in Japan: 1982-2002

“…5 1 Now the yield of the singlet oxygen is very close to the oscillation threshold. Table I shows the timetable of SOG development in Japan.…”

“…gas is injected to the inside of the porous pipe at a blast. 5 The world's first pulsed COIL was developed using this SOG.1 6 An ambitious study, observation of lasing from 0 2 ('A) directly, was tried using this pulsed SOG.1 7 According to the theoretical calculation, a 6-m active volume length should produce a realistic positive gain even 0 2 ('A) to O2(31) is a strictly prohibited transition. However, the experiment resulted in unsuccessful.…”

“…The problem of supersonic COIL attracted him because it is a unique problem from the viewpoint of fluid dynamics, since the Reynolds Number is much lower than the well-studied supersonic flows. Their studies began with the diagnostics of the duct flow 52 , and followed by the discussion of the chemical reactions at the mixing nozzles 5 3" 54 . The results were fed back to the KHI-COIL.…”