Stimulated Brillouin scattering threshold in fiber amplifiers
Creators
- 1. College of Science, University of Shanghai for Science and Technology, Shanghai (China)
- 2. College of Information Engineering, Zhejiang University of Technology, Hangzhou (China)
Description
Based on the wave coupling theory and the evolution model of the critical pump power (or Brillouin threshold) for stimulated Brillouin scattering (SBS) in double-clad fiber amplifiers, the influence of signal bandwidth, fiber-core diameter and amplifier gain on SBS threshold is simulated theoretically. And experimental measurements of SBS are presented in ytterbium-doped double-clad fiber amplifiers with single-frequency hundred nanosecond pulse amplification. Under different input signal pulses, the forward amplified pulse distortion is observed when the pulse energy is up to 660 nJ and the peak power is up to 3.3 W in the pulse amplification with pulse duration of 200 ns and repetition rate of 1 Hz. And the backward SBS narrow pulse appears. The pulse peak power equals to SBS threshold. Good agreement is shown between the modeled and experimental data. (authors)
Additional details
Publishing Information
- Journal Title
- High Power Laser and Particle Beams
- Journal Volume
- 23
- Journal Issue
- 9
- Journal Page Range
- p. 2405-2408
- ISSN
- 1001-4322
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 43109233
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- AMPLIFIERS; BRILLOUIN EFFECT; COUPLING; DOPED MATERIALS; FIBERS; GAIN; PEAK LOAD; PULSES; PUMPS; SIGNALS; SIMULATION; YTTERBIUM
- Descriptors DEC
- AMPLIFICATION; COHERENT SCATTERING; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; MATERIALS; METALS; RARE EARTHS; SCATTERING
Optional Information
- Notes
- 5 figs., 14 refs.