Statistical dynamics of noise-like rectangle pulse fiber laser  

作　　者：Yujia Li Dongmei Huang Yihuan Shi Chao Wang Feng Li 

机构地区：[1]The Hong Kong Polytechnic University,Photonics Research Institute,Department of Electrical Engineering,Hong Kong,China [2]The Hong Kong Polytechnic University,Shenzhen Research Institute,Shenzhen,China [3]The Hong Kong Polytechnic University,Photonics Research Institute,Department of Electronic and Information Engineering,Hong Kong,China

出　　处：《Advanced Photonics Nexus》2023年第3期40-52,共13页先进光子学通讯（英文）

基　　金：support from the National Key R&D Program of China(Grant No.2020YFB1805901);the National Natural Science Foundation of China(Grant No.62105274);the Technology and Innovation Commission of Shenzhen Municipality(Grant No.JCYJ20210324133406018);the Research Grants Council,University Grants Committee of Hong Kong SAR(Grant No.PolyU15301022).

摘　　要：The statistical dynamics of partially incoherent ultrafast lasers are complex and chaotic,which is significant for fundamental research and practical applications.We experimentally and theoretically reveal the statistical dynamics of the spectral evolutions and correlations in an incoherent noise-like rectangle pulse laser(NLRPL).Based on statistical histogram analysis,the probability distribution asymmetry of the spectral intensity fluctuation is decayed with the wavelength far away from the spectral peak due to the detection noise.The full-spectral correlation values indicate that the spectral similarity between two round trips is exponentially weakened as the round-trip offset increases.By studying the correlation map of spectral components,we find that the area of the high-correlation region is relevant to the pump power,which is reduced by increasing the pump power.The mutual information of the spectra demonstrates that two spectral components with symmetry about the spectral peak have a statistical dependence.Experimental observations and statistical properties can coincide well with theoretical numerical simulations.We reveal the pump-dependent spectral correlation of the NLRPL and provide multiple statistical methods for the characterizations of chaotic dynamics in incoherent light sources.

关 键 词：fiber laser statistical analysis laser dynamics noise-like rectangle laser 

分 类 号：TN2[电子电信—物理电子学]