Ferjani Sameh, Sorriso-Valvo Luca, De Luca Antonio, Barna Valentin, De Marco Rossana, Strangi Giuseppe
Dipartimento di Fisica, Università della Calabria, and CNISM-Unità di Cosenza, Ponte P. Bucci, Cubo 31C, Rende CS, Italy.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jul;78(1 Pt 1):011707. doi: 10.1103/PhysRevE.78.011707. Epub 2008 Jul 24.
A statistical analysis of random lasing events observed in dye-doped nematic-liquid-crystal films is reported. The occurrence of random laser action in such complex fluids is due to residual resonances in the multiple scattering of spontaneously emitted photons. The Shannon entropy and a local-Poisson test are used here in order to quantitatively characterize the chaotic behavior of laser spikes and gain further understanding of the mechanisms underlying the lasing effect in strongly scattering organized fluids arising by an unexpected interplay of localization and amplification.
本文报道了对染料掺杂向列相液晶薄膜中观察到的随机激光事件的统计分析。在这种复杂流体中出现随机激光作用是由于自发发射光子多次散射中的残余共振。这里使用香农熵和局部泊松检验来定量表征激光尖峰的混沌行为，并进一步了解在由定位和放大的意外相互作用产生的强散射有序流体中激光效应背后的机制。
