Simulation of multimode lasing in an electron-beam-controlled CO{sub 2} laser with an unstable cavity under thermal self-action of radiation

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N08ABEH014214· OSTI ID:21471293

Naumov, V G; Svotin, P A ^[1]

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1. State Research Center of Russian Federation 'Troitsk Institute for Innovation and Fusion Research', Troitsk, Moscow Region (Russian Federation)

A numerical technique for calculating the time-dependent multimode lasing in an electron-beam-controlled CO{sub 2} laser at significant optical inhomogeneities caused by radiation self-action is presented. The reported calculations for subatmospheric pressure yield a sequence of involvement of transverse modes in lasing, the evolution of their characteristics (which is self-consistent with the evolution of gain and optical inhomogeneities of the active medium), and the exclusion of output modes from lasing. This calculation technique can be used when the radiation round-trip time around the cavity is shorter than the characteristic time of change in the active-medium characteristics. (lasers)

• OSTI ID: 21471293
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 8; Other Information: DOI: 10.1070/QE2010v040n08ABEH014214; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CARBON DIOXIDE LASERS
ELECTRON BEAMS
GAIN
LASER CAVITIES
SIMULATION
TIME DEPENDENCE
AMPLIFICATION
BEAMS
GAS LASERS
LASERS
LEPTON BEAMS
PARTICLE BEAMS