Continuous-wave laser oscillation on the 1315 nm transition of atomic iodine pumped by O 2(a 1Δ) produced in an electric discharge

David L. Carroll, Joseph T. Verdeyen, Darren M. King, Joseph W. Zimmerman, Julia K. Laystrom, Brian S. Woodard, Gabriel F. Benavides, Kirk Kittell, D. Shane Stafford, Mark J. Kushner, Wayne C. Solomon

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Abstract

Laser action at 1315 nm on the I( 2P 1/2) → I( 2P 3/2) transition of atomic iodine is conventionally obtained by a near-resonant energy transfer from O 2(a 1Δ) which is produced using wet-solution chemistry. The difficulties in chemically producing O 2(a 1Δ) has motivated investigations into purely gas phase methods to produce O 2(a 1Δ) using low-pressure electric discharges. In this letter, we report on the demonstration of a continuous-wave laser on the 1315 nm transition of atomic iodine where the O 2(a 1Δ) used to pump the iodine was produced by a radio-frequency-excited electric discharge. The electric discharge was sustained in a He/O 2 gas mixture upstream of a supersonic cavity which is employed to lower the temperature of the continuous gas flow and shift the equilibrium of atomic iodine in favor of the I( 2P 1/2) state. The laser output power was 220 mW in a stable cavity composed of two 99.99% reflective mirrors.

Original languageEnglish (US)
Article number111104
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number11
DOIs
StatePublished - Mar 14 2005

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Carroll, D. L., Verdeyen, J. T., King, D. M., Zimmerman, J. W., Laystrom, J. K., Woodard, B. S., Benavides, G. F., Kittell, K., Stafford, D. S., Kushner, M. J., & Solomon, W. C. (2005). Continuous-wave laser oscillation on the 1315 nm transition of atomic iodine pumped by O 2(a 1Δ) produced in an electric discharge. Applied Physics Letters, 86(11), 1-3. [111104]. https://doi.org/10.1063/1.1883317