基于回音壁模式的碲酸盐玻璃微球谐振器中的级联布里渊激光发射

Cascade Brillouin Lasing in a Tellurite-Glass Microsphere Resonator with Whispering Gallery Modes.

作者信息

Anashkina Elena A, Marisova Maria P, Dorofeev Vitaly V, Andrianov Alexey V

机构信息

Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia.

G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences, 49 Tropinin Street, 603950 Nizhny Novgorod, Russia.

出版信息

Sensors (Basel). 2022 Apr 8;22(8):2866. doi: 10.3390/s22082866.

DOI:10.3390/s22082866

PMID:35458851

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9028995/

Abstract

Brillouin microlasers based on microresonators with whispering gallery modes (WGMs) are in high demand for different applications including sensing and biosensing. We fabricated a microsphere resonator with WGMs from a synthesized high-quality tellurite glass with record high Q-factors for tellurite microresonators (Q ≥ 2.5 × 10), a high Brillouin gain coefficient (compared to standard materials, e.g., silica glasses), and a Brillouin frequency shift of 9 ± 0.5 GHz. The high density of excited resonance modes and high loaded Q-factors allowed us to achieve experimentally cascade Stokes-Brillouin lasing up to the 4th order inclusive. The experimental results are supported by the results of the theoretical analysis. We also theoretically obtained the dependences of the output Brillouin powers on the pump power and found the pump-power thresholds for the first five Brillouin orders at different values of pump frequency detuning and Q-factors, and showed a significant effect of these parameters on the processes under consideration.

摘要

基于具有回音壁模式（WGMs）的微谐振器的布里渊微激光器在包括传感和生物传感在内的不同应用中需求很高。我们用合成的高质量碲酸盐玻璃制造了一个具有WGMs的微球谐振器，该碲酸盐微谐振器具有创纪录的高品质因数（Q≥2.5×10）、高布里渊增益系数（与标准材料如石英玻璃相比）以及9±0.5 GHz的布里渊频移。激发共振模式的高密度和高负载品质因数使我们能够通过实验实现高达包括第4阶的级联斯托克斯 - 布里渊激光发射。实验结果得到了理论分析结果的支持。我们还从理论上获得了输出布里渊功率对泵浦功率的依赖性，并找到了在不同泵浦频率失谐值和品质因数下前五个布里渊阶的泵浦功率阈值，并展示了这些参数对所考虑过程的显著影响。