Kinetics of an oxygen – iodine active medium with iodine atoms optically pumped on the {sup 2}P{sub 1/2} – {sup 2}P{sub 3/2} transition

Journal Article · Mon Aug 31 04:00:00 EDT 2015 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2015V045N08ABEH015619· OSTI ID:22551198

Zagidullin, M V; Azyazov, V N ^[1]; Malyshev, M S ^[2]

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1. Samara Branch of the P.N. Lebedev Physical Institute, Russian Academy of Sciences, Samara (Russian Federation)
2. S.P. Korolev Samara State Aerospace University, Samara (Russian Federation)

The kinetics of the processes occurring in an O{sub 2} – I{sub 2} – He – H{sub 2}O gas flow in which photodissociation of molecular iodine at a wavelength close to 500 nm and excitation of atomic iodine on the {sup 2}P{sub 1/2} – {sup 2}P{sub 3/2} transition by narrow-band radiation near 1315 nm are implemented successively has been analysed. It is shown that implementation of these processes allows one to form an oxygen – iodine medium with a high degree of dissociation of molecular iodine and a relative content of singlet oxygen O{sub 2}(a{sup 1}Δ) exceeding 10%. Having formed a supersonic gas flow with a temperature ∼100 K from this medium, one can reach a small-signal gain of about 10{sup -2} cm{sup -1} on the {sup 2}P{sub 1/2} – {sup 2}P{sub 3/2} transition in iodine atoms. The specific power per unit flow cross section in the oxygen – iodine laser with this active medium may reach ∼100 W cm{sup -2}. (active media)

• OSTI ID: 22551198
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 8 Vol. 45; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DISSOCIATION
EXCITATION
GAS FLOW
HELIUM
IODINE
IODINE LASERS
KINETICS
MOLECULES
OPTICAL PUMPING
OXYGEN
PHOTOLYSIS
SIGNALS
SUPERSONIC FLOW
WATER
WAVELENGTHS