Abstract

Based on numerical modeling, the dynamic characteristics of high-power ytterbium-doped double-clad fiber amplifiers during the amplification of nanosecond pulses with kilohertz repetition rates are comprehensively analyzed. The temporal pulse energy, power, upper-level population distribution, amplified spontaneous emission, stored energy, pulse waveform evolution, etc., are emphasized in this paper. Some practical issues in amplification processes, such as the impacts of reflected pulses from the external surfaces and the fluctuation of input pulse energy on the amplifier performance, are also discussed. The models and results are important for the design and development of high-power double-clad fiber amplifiers.

© 2003 IEEE

Dynamics of high-power erbium–ytterbium fiber amplifiers

Guillaume Canat, Jean-Claude Mollier, Jean-Pierre Bouzinac, Glenn M. Williams, Brian Cole, Lew Goldberg, Yves Jaouën, and Gabor Kulcsar
J. Opt. Soc. Am. B 22(11) 2308-2318 (2005)

Modeling and optimization of Q-switched double-clad fiber lasers

Yong Wang and Chang-Qing Xu
Appl. Opt. 45(9) 2058-2071 (2006)

High-peak-power Tm-doped double-clad fluoride fiber amplifier

Marc Eichhorn
Opt. Lett. 30(24) 3329-3331 (2005)

Ultra-large core birefringent Yb-doped tapered double clad fiber for high power amplifiers

Andrey Fedotov, Teppo Noronen, Regina Gumenyuk, Vasiliy Ustimchik, Yuri Chamorovskii, Konstantin Golant, Maxim Odnoblyudov, Joona Rissanen, Tapio Niemi, and Valery Filippov
Opt. Express 26(6) 6581-6592 (2018)

Double clad tapered fiber for high power applications

V. Filippov, Yu. Chamorovskii, J. Kerttula, K. Golant, M. Pessa, and O. G. Okhotnikov
Opt. Express 16(3) 1929-1944 (2008)