Measurement of positive gain on the 1315nm transition of atomic iodine pumped by O2(a1Δ) produced in an electric discharge
2004; American Institute of Physics; Volume: 85; Issue: 8 Linguagem: Inglês
10.1063/1.1784519
ISSN1520-8842
AutoresDavid L. Carroll, J. T. Verdeyen, Darren M. King, Joseph W. Zimmerman, Julia Laystrom, Brian Woodard, N. Richardson, Kirk Kittell, Mark J. Kushner, Wayne C. Solomon,
Tópico(s)Atomic and Subatomic Physics Research
ResumoLaser action at 1315nm on the I(P1∕22)→I(P3∕22) 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 1315nm 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(P1∕22) 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.
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