基于在超弱散射区中纳米粒子散射的相干随机光纤激光器。

Coherent random fiber laser based on nanoparticles scattering in the extremely weakly scattering regime.

机构信息

CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.

出版信息

Phys Rev Lett. 2012 Dec 21;109(25):253901. doi: 10.1103/PhysRevLett.109.253901. Epub 2012 Dec 18.

DOI:10.1103/PhysRevLett.109.253901

PMID:23368465

Abstract

We demonstrate the realization of a coherent random fiber laser (RFL) in the extremely weakly scattering regime, which contains a dispersive solution of polyhedral oligomeric silsesquioxanes nanoparticles (NPs) and laser dye pyrromethene 597 in carbon disulfide that was injected into a hollow optical fiber. Multiple scattering of polyhedral oligomeric silsesquioxanes NPs greatly enhanced by the waveguide confinement effect was experimentally verified to account for coherent lasing observed in our RFL system. This Letter extends the NPs-based RFLs from the incoherent regime to the coherent regime.

摘要

我们在极其弱散射条件下实现了相干随机光纤激光器（RFL），该激光器包含聚倍半硅氧烷纳米粒子（NPs）的分散溶液和二硫化碳中的激光染料吡咯并[5,6-f]苯并噻二唑 597，注入到空心光纤中。通过实验验证了聚倍半硅氧烷 NPs 的多散射通过波导限制效应大大增强，这解释了我们在 RFL 系统中观察到的相干激光。本通信将基于 NPs 的 RFL 从非相干模式扩展到相干模式。