Zeeman effects in the hyperfine structure of atomic iodine photodissociation laser emission

Iodine photodissociation laser oscillator characteristics

“…The hyperfine transition which is expected to be oscillating at the point of termination is the F= 3 --+ 4 transition, since a knowledge of the hyperfine splitting pattern (Zuev et a1 1972) shows this to have the highest gain of the six possible allowed transitions. The presence of magnetic fields (Hwang and Kasper 1972) does not affect this conclusion, since in our case current flow in the flashlamp ceases after 3 ps, but pumping continues for about 20 ps, due to the afterglow effect in the flashlamp shown previously (Baker and King 1975). Termination of oscillation thus takes place under zero-field conditions, and the value of U for the F= 3 --t 4 transition should be used in the termination condition.…”

Pressure Broadening of the 1.3 μm Iodine Laser Line

“…In the case of the photochemical iodine laser the upper and lower levels of the laser transition ( 2 Pt/2-2 P3/2) have a hyperfine splitting (hfs) 2 ' 10 . According to this hfs we have six different possible lines.…”

Hyperfine structure and collision parameters of the 1.315 μm iodine laser transition studied by a frequency-controlled laser

“…There is some evidence that a low level of current persists for a considerably longer time; the careful matching of the flashlamps, outlined in $2, is aimed at cancelling the magnetic field generated by this low-level current. A low magnetic field is necessary to avoid significant Zeeman splitting of the hyperfine transitions, which seriously affects their relative gain (Hwang and Kasper 1972).…”