Title :
Optimization of pulse amplification in ytterbium-doped double-clad fiber amplifiers
Author_Institution :
Dept. of Eng. Phys., McMaster Univ., Hamilton, Ont., Canada
fDate :
6/1/2005 12:00:00 AM
Abstract :
In the present paper, high-power continuous-wave (CW)-pumped ytterbium-doped double-clad (YDDC) fiber amplifiers for the amplification of nanosecond pulses with tens of kilohertz repetition rates are numerically studied. Targeting pulse energy and average output power, the fiber amplifiers under forward, backward, and bidirectional pump are systematically analyzed and optimized in consideration of pump and signal wavelengths, pulse repetition rate, fiber structure and length, dopant concentration, and Raman effect, etc.
Keywords :
high-speed optical techniques; optical fibre amplifiers; optical fibre cladding; optical pumping; stimulated Raman scattering; ytterbium; Raman effect; backward pump; bidirectional pump; dopant concentration; fiber structure; forward pump; nanosecond pulse amplification; pulse energy; pulse repetition rates; ytterbium-doped double-clad fiber amplifiers; Doped fiber amplifiers; Erbium-doped fiber lasers; High power amplifiers; Laser theory; Optical fiber polarization; Power amplifiers; Power generation; Pulse amplifiers; Pulse shaping methods; Raman scattering; Double cladding; fiber amplifier; optimization; pulse amplification; stimulated Raman scattering (SRS); ytterbium;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.849946
