{"title":"Brillouin Lasing in a Silica Microsphere With Allowance for Rayleigh Scattering","authors":"Elena A. Anashkina;Alexey V. Andrianov","doi":"10.1109/LPT.2024.3444328","DOIUrl":null,"url":null,"abstract":"We demonstrate cascade Brillouin lasing in a silica microsphere with 11-GHz spectral spacing between neighboring orders. Using unidirectional pump, up to three Brillouin cascades are attained in both forward and backward spectra due to Rayleigh scattering. We show experimentally and numerically that for weak and strong intermode coupling, the system behavior differs. For weak coupling, first-order Brillouin waves are mainly generated in the backward direction while second-order waves are mainly observed in the forward one. For strong coupling, powers for each order are the same in both directions.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 18","pages":"1121-1124"},"PeriodicalIF":2.3000,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10637445/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
We demonstrate cascade Brillouin lasing in a silica microsphere with 11-GHz spectral spacing between neighboring orders. Using unidirectional pump, up to three Brillouin cascades are attained in both forward and backward spectra due to Rayleigh scattering. We show experimentally and numerically that for weak and strong intermode coupling, the system behavior differs. For weak coupling, first-order Brillouin waves are mainly generated in the backward direction while second-order waves are mainly observed in the forward one. For strong coupling, powers for each order are the same in both directions.
期刊介绍：
IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.
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