Sensitivity and spectral control of network lasers.
Sensitivity and spectral control of network lasers.
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DOI：
10.1038/s41467-022-34073-3
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发表时间：
2022-10-30
影响因子：
16.6
通讯作者：
Sapienza, Riccardo
中科院分区：
文献类型：
--
作者：
Saxena, Dhruv;Arnaudon, Alexis;Cipolato, Oscar;Gaio, Michele;Quentel, Alain;Yaliraki, Sophia;Pisignano, Dario;Camposeo, Andrea;Barahona, Mauricio;Sapienza, Riccardo
最近，复杂网络中的随机激光已经在50多种局部模式上显示出有效的激光，这些模式是由底层图形上的多重散射促进的。如果加以控制，这些网络激光器可以产生具有合成光谱的快速切换多功能光源。这里，我们在实验和理论上都观察到网络激光光谱对泵浦分布的空间形状的高灵敏度，其中某些模式例如在关闭7%的泵浦光束时强度增加280%。我们在稳态从头算激光理论（SALT）近似下求解非线性方程组，并在一个图形上显示了约90%的最强强度模式的选择性激光发射，有效地编程了激光发射网络的光谱。在我们对聚合物网络的实验中，这种高灵敏度使得能够通过非均匀泵浦模式控制激光光谱。我们提出网络模式的潜在复杂性作为有效光谱控制背后的关键因素，为光学器件的开发开辟了道路，对通信，传感和计算的片上光子学具有广泛的影响。具有可编程发射光谱的纳米光子光源是集成光子学、传感和光学计算的重要组成部分。在这里，作者调谐网络激光器的复杂的激光光谱，实现选择性激射的单一，两个或更多的模式。
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. Nanophotonic light sources with programmable emission spectrum are important building blocks for integrated photonics, sensing and optical computing. Here the authors tune the complex laser spectrum of a network laser achieving selective lasing of a single, two or more modes.
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影响因子：
48
作者：
Fan, Xudong;Yun, Seok-Hyun
通讯作者：
Yun, Seok-Hyun
DOI：
10.1115/1.2891191
发表时间：
1990-08-01
影响因子：
1.7
作者：
PARKER, KH;JONES, CJH
通讯作者：
JONES, CJH
影响因子：
2.4
作者：
Schaub, Michael T.;Delvenne, Jean-Charles;Barahona, Mauricio
通讯作者：
Barahona, Mauricio
影响因子：
2.9
作者：
Ge, Li;Chong, Y. D.;Stone, A. Douglas
通讯作者：
Stone, A. Douglas
影响因子：
3.8
作者：
Ge, Li;Tandy, Robert J.;Tuereci, Hakan E.
通讯作者：
Tuereci, Hakan E.