Imperial College London
Alternate

DrAlexisArnaudon

Faculty of Natural Sciences, Department of Mathematics

Academic Visitor
 
 
 
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Contact

 

+44 (0)7463 328 499alexis.arnaudon Website

 
 
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Location

 

6M34Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sapienza:2022:10.1038/s41467-022-34073-3,
author = {Sapienza, R and Barahona, M and Saxena, D and alexis, A and Yaliraki, S},
doi = {10.1038/s41467-022-34073-3},
journal = {Nature Communications},
pages = {1--7},
title = {Sensitivity and spectral control of network lasers},
url = {http://dx.doi.org/10.1038/s41467-022-34073-3},
volume = {13},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Recently, random lasing in complex networks has shown efficient lasing over more than 50 localised modes, promoted by multiple scattering over the underlying graph. If controlled, these network lasers can lead to fast-switching multifunctional light sources with synthesised spectrum. Here, we observe both in experiment and theory high sensitivity of the network laser spectrum to the spatial shape of the pump profile, with some modes for example increasing in intensity by 280% when switching off 7% of the pump beam. We solve the nonlinear equations within the steady state ab-initio laser theory (SALT) approximation over a graph and we show selective lasing of around 90% of the strongest intensity modes, effectively programming the spectrum of the lasing networks. In our experiments with polymer networks, this high sensitivity enables control of the lasing spectrum through non-uniform pump patterns. We propose the underlying complexity of the network modes as the key element behind efficient spectral control opening the way for the development of optical devices with wide impact for on-chip photonics for communication, sensing, and computation.
AU  - Sapienza,R
AU  - Barahona,M
AU  - Saxena,D
AU  - alexis,A
AU  - Yaliraki,S
DO  - 10.1038/s41467-022-34073-3
EP  - 7
PY  - 2022///
SN  - 2041-1723
SP  - 1
TI  - Sensitivity and spectral control of network lasers
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-022-34073-3
UR  - https://www.nature.com/articles/s41467-022-34073-3
UR  - http://hdl.handle.net/10044/1/100305
VL  - 13
ER  -
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