Open AccessIncreased Stokes pulse energy variation from amplified classical noise in a fiber Raman generator
Author(s) -
Arkadiusz Betlej,
Peter Schmitt,
Panagiotis Sidereas,
Robert J. Tracy,
Christopher G. Goedde,
J. Thompson
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.002948
Subject(s) - optics , physics , pulse (music) , raman amplification , noise (video) , pulse shaping , energy (signal processing) , raman scattering , raman spectroscopy , laser , quantum mechanics , artificial intelligence , detector , computer science , image (mathematics)
We present an experimental and theoretical study of the transition from linear to nonlinear amplification of classical pump noise in a fiber Raman generator. In particular, we focus on the conversion of fluctuations in the fine temporal structure of Q-switched pump pulses into Stokes pulse energy fluctuations. We show that there is a distinct pump power domain where large scale fluctuations in the Stokes pulse energy result from the amplification of fluctuations in the temporal structure of pump pulses with stable energies. Dramatic changes in the shape of the Stokes pulse energy probability distribution also occur as the pump power is swept through the domain of large scale energy fluctuations.