Biophotonic rogue waves in red blood cell suspensions  

作　　者：YU-XUAN REN JOSHUA LAMSTEIN CHENSONG ZHANG CLAUDIO CONTI DEMETRIOS NCHRISTODOULIDES ZHIGANG CHEN 

机构地区：[1]Institute for Translational Brain Research,MOE Frontiers Center for Brain Science,Fudan University,Shanghai 200032,China [2]Department of Physics and Astronomy,San Francisco State University,San Francisco,California 94132,USA [3]Center for Systems and Therapeutics,Gladstone Institutes,San Francisco,California 94158,USA [4]Division of CryoEM and Bioimaging,Stanford Synchrotron Radiation Lightsource,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA [5]Department of Physics,University Sapienza,I-00185 Roma,Italy [6]Department of Electrical Engineering,University of Southern California,Los Angeles,California 90089,USA [7]TEDA Applied Physics Institute and School of Physics,Nankai University,Tianjin 300457,China

出　　处：《Photonics Research》2023年第11期1838-1846,共9页光子学研究（英文版）

摘　　要：Rogue waves are ubiquitous in nature,appearing in a variety of physical systems ranging from acoustics,microwave cavities,optical fibers,and resonators to plasmas,superfluids,and Bose–Einstein condensates.Unlike nonlinear solitary waves,rogue waves are extreme events that can occur even without nonlinearity by,for example,spontaneous synchronization of waves with different spatial frequencies in a linear system.Here,we report the observation of rogue-wave-like events in human red blood cell(RBC)suspensions under weak light illumination,characterized by an abnormal L-shaped probability distribution.Such biophotonic extreme events arise mostly due to the constructive interference of Mie-scattered waves from the suspended RBCs,whose biconcave shape and mutable orientation give rise to a time-dependent random phase modulation to an incident laser beam.We numerically simulate the beam propagation through the colloidal suspensions with added disorder in both spatial and temporal domains to mimic random scattering due to Brownian motion.In addition,at high power levels,nonlinear beam self-focusing is also observed,leading to a dual-exponential probability distribution associated with the formation of multiple soliton-like spots.Such rogue wave events should also exist in environments with cells of other species such as swimming bacteria,and understanding of their underlying physics may lead to unexpected biophotonic applications.

关 键 词：SUSPENSIONS EXTREME SOLITON 

分 类 号：O411.1[理学—理论物理]