Manipulating Random Lasing Correlations in Doped Liquid Crystals
Abstract
Random lasers are highly configurable light sources that are promising for imaging and photonic integration. In this study, random lasing action was generated by optically pumping MBBA liquid crystals infiltrated with gold nanoparticles and laser dye (pyrromethene 597). By varying the pump energy near lasing threshold, we show that it is possible to control the intensity correlations between the random lasing modes. The correlations in the system were phenomenologically characterized using the L\'evy statistics of the emission spectra survival function. We also find that correlations and persistence of lasing action are correlated. These results demonstrate the possibility to dynamically control a key physical feature of random lasers, which may find applications in biomedical settings and network communications.
Cite
@article{arxiv.2208.12421,
title = {Manipulating Random Lasing Correlations in Doped Liquid Crystals},
author = {Yiyang Zhi and Andrew Lininger and Giuseppe Strangi},
journal= {arXiv preprint arXiv:2208.12421},
year = {2023}
}
Comments
Changes in the third version: 1). further experiments to verify the observed trends decorrelated from the initial experimental time-series 2). proving the previously observed hysteresis and redshift behavior 3). additional analysis justifying the use of a L\'evy distribution fit to the survival function 4). extensive updates to the figures for increased clarity