Random distributed feedback fibre lasers belong to the class of random lasers, where the feedback is provided by amplified Rayleigh scattering on sub-micron refractive index inhomogenities randomly distributed over the fibre length. Despite the elastic nature of Rayleigh scattering, the feedback mechanism has been insofar deemed incoherent, which corresponds to the commonly observed smooth generation spectra. Here, using a real-time spectral measurement technique based on a scanning Fabry-Pérot interferometer, we observe long-living narrowband components in the random fibre laser's spectrum. Statistical analysis of the ∼10 single-scan spectra reveals a preferential interspacing for the components and their anticorrelation in intensities. Furthermore, using mutual information analysis, we confirm the existence of nonlinear correlations between different parts of the random fibre laser spectra. The existence of such narrowband spectral components, together with their observed correlations, establishes a long-missing parallel between the fields of random fibre lasers and conventional random lasers.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5454388 | PMC |
| http://dx.doi.org/10.1038/ncomms15514 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The effect of carbon fiber custom dynamic orthosis type on kinematics and kinetics of lower extremity joints in individuals with lower limb traumatic injuries.
Gait Posture
December 2024
Department of Physical Therapy and Rehabilitation Science, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
Background: Carbon fiber custom dynamic orthoses have been used to improve gait mechanics after lower limb trauma in military service members, with the goal of restoring function and improving outcomes. However, the effects of commercially available carbon fiber orthoses available to civilians on lower extremity joint kinetics and kinematics are poorly understood.
Research Question: The aim of this study was to examine the effect of two commercially available orthoses on lower extremity kinematics and kinetics in individuals with lower limb trauma.
Integrative physiological, biochemical, and proteomic analysis of the leaves of two cotton genotypes under heat stress.
PLoS One
January 2025
Department of Biochemistry, Bahauddin Zakariya University, Multan, Pakistan.
Cotton (Gossypium hirsutum L.), a crucial global fibre and oil seed crop faces diverse biotic and abiotic stresses. Among these, temperature stress strongly influences its growth, prompting adaptive physiological, biochemical, and molecular changes.
View Article and Find Full Text PDFFast yet force-effective mode of supracellular collective cell migration due to extracellular force transmission.
PLoS Comput Biol
January 2025
Department of Mechanical Engineering & Materials Science, Washington University, St. Louis, Missouri, United States of America.
Cell collectives, like other motile entities, generate and use forces to move forward. Here, we ask whether environmental configurations alter this proportional force-speed relationship, since aligned extracellular matrix fibers are known to cause directed migration. We show that aligned fibers serve as active conduits for spatial propagation of cellular mechanotransduction through matrix exoskeleton, leading to efficient directed collective cell migration.
View Article and Find Full Text PDFFeasibility and preliminary effects of the mindful healthy family project among rural families.
Health Psychol Behav Med
December 2024
University Outreach and Engagement, Michigan State University, East Lansing, MI, USA.
Background/purpose: Rural adults and children are at higher risk for overweight and obesity. However, there are relatively few lifestyle modification programs available for these high-risk families, mainly because of the difficulty in reaching them. This mindfulness-based motivational interviewing (MM-based-MI) pilot aimed to improve parents' healthy eating index (HEI), collective family efficacy, family satisfaction, perceived stress, and depressive symptoms as well as parent-child dyads' eating patterns, physical activity (PA), and body mass index (BMI).
View Article and Find Full Text PDFSupplementing the standard diet with brown rice bran powder might effectively improve the metabolic syndrome characteristics and antioxidant status: an open label randomized controlled trial.
Food Funct
January 2025
Cardiovascular Diseases Research Center, Department of Cardiology, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
: This study explores the impact of brown rice bran powder (BRBP), known for its beneficial components, such as dietary fiber and γ-oryzanol, on individuals suffering from metabolic syndrome (MetS). /: In this eight-week open-label controlled trial, fifty participants with MetS were randomly assigned to either a control group, which received a standard diet (SDiet), or an intervention group, which incorporated 15 grams of BRBP daily into their diet. Demographic, anthropometric and clinical data were collected, and blood samples were taken to assess metabolic factors and antioxidant enzyme activities.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!