Solving rate equations including backgroud losses applicable to threshold pumped fiber lasers with three-energy-level dopants

dou ru-hai; chen jian-guo; duan zhi-chun; zhang li-ping

Volume 19 Issue 10

Oct. 2007

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Article Navigation > High Power Laser and Particle Beams > 2007 > 19(10): 0-

qiu ying-wei, sun hong, tang jing-yu, et al. Voltage control loop for rapid cycling synchrotron digital low-level RF control[J]. High Power Laser and Particle Beams, 2008, 20.

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dou ru-hai, chen jian-guo, duan zhi-chun, et al. Solving rate equations including backgroud losses applicable to threshold pumped fiber lasers with three-energy-level dopants[J]. High Power Laser and Particle Beams, 2007, 19.

qiu ying-wei, sun hong, tang jing-yu, et al. Voltage control loop for rapid cycling synchrotron digital low-level RF control[J]. High Power Laser and Particle Beams, 2008, 20.

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Solving rate equations including backgroud losses applicable to threshold pumped fiber lasers with three-energy-level dopants

1.
Department of Optoelectronics,Sichuan University,Chengdu 610064,China

Publish Date: 2007-10-15

Abstract

Abstract

An analytical expression of the threshold pump power of the fiber laser with three-energy-level dopants has been obtained from rate equations including loss coefficients of the pump and laser radiations. And the rate equations describing the threshold pumped fiber lasers have been analytically solved, following the derivation of the implicit expression specifying the pump power variation along the fiber and explicit expressions of the position dependent population densities on the three energy levels in terms of the pump power variation. With these expressions, threshold characteristics of the fiber lasers have been studied. The threshold pump power grows monotonously with the increase of the loss coefficient of the pump radiation. The population density of the upper level decreases with t
- fiber lasers,
- three-energy-level ion,
- loss coefficient,
- analytical expression,
- rate equations,
- threshold pump power

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