Betlej Arkadiusz, Schmitt Peter, Sidereas Panagiotis, Tracy Ryan, Goedde Christopher, Thompson John
Opt Express. 2005 Apr 18;13(8):2948-60. doi: 10.1364/opex.13.002948.
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.
我们给出了光纤拉曼发生器中经典泵浦噪声从线性放大到非线性放大转变的实验和理论研究。特别地，我们关注调Q泵浦脉冲精细时间结构中的涨落向斯托克斯脉冲能量涨落的转换。我们表明，存在一个独特的泵浦功率域，在该域中，具有稳定能量的泵浦脉冲时间结构中的涨落放大导致了斯托克斯脉冲能量的大规模涨落。当泵浦功率扫过大规模能量涨落域时，斯托克斯脉冲能量概率分布的形状也会发生显著变化。
