TITLE

Measurement of positive gain on the 1315 nm transition of atomic iodine pumped by O2(a1Δ) produced in an electric discharge

AUTHOR(S)
Carroll, D. L.; Verdeyen, J. T.; King, D. M.; Zimmerman, J. W.; Laystrom, J. K.; Woodard, B. S.; Richardson, N.; Kittell, K.; Kushner, Mark J.; Solomon, W. C.
PUB. DATE
August 2004
SOURCE
Applied Physics Letters;8/23/2004, Vol. 85 Issue 8, p1320
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Laser action at 1315 nm on the I(2P1/2)→I(2P3/2) transition of atomic iodine is conventionally obtained by a near-resonant energy transfer from O2(a1Δ), which is produced using wet-solution chemistry. The system difficulties of chemically producing O2(a1Δ) has motivated investigations into gas phase methods to produce O2(a1Δ) using low-pressure electric discharges. In this letter we report on positive gain on the 1315 nm transition of atomic iodine where the O2(a1Δ) was produced in a flowing electric discharge. The electric discharge was followed by a continuously flowing supersonic cavity that was necessary to lower the temperature of the flow and shift the equilibrium of atomic iodine more in favor of the I(2P1/2) state. A tunable diode laser system capable of scanning the entire line shape of the (3,4) hyperfine transition of iodine provided the measurements of gain.
ACCESSION #
14154476

 

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