Yan Sun, Zhenyu Zhao, Zihan Ren, Fang Zhang, Fei Xing, Dan Yu
{"title":"Ultraviolet saturable absorption behavior of black phosphorus.","authors":"Yan Sun, Zhenyu Zhao, Zihan Ren, Fang Zhang, Fei Xing, Dan Yu","doi":"10.1088/1361-6528/ae0f21","DOIUrl":null,"url":null,"abstract":"<p><p>Black phosphorus (BP) has attracted much attention due to its distinctive band-gap properties and strong light-matter interaction, which make it a promising nonlinear optical material. In this study, BP nanosheets were exfoliated successfully utilizing the liquid phase exfoliation technique. Using an open-aperture Z-scan method, the broadband nonlinear absorption characteristics of BP nanosheets were studied. Under 355 nm excitation, the BP nanosheets demonstrated pronounced saturation absorption properties, with the maximum normalized transmittance of the wave peaks reaching 149% at an excitation energy of 7 μJ. Moreover, the threshold for nonlinear absorption behavior in BP nanosheets at 355 nm was approximately 0.023 GW/cm².The results showed that BP nanosheets possess strong saturable absorption properties in ultraviolet waveband. The saturable absorption characteristics of BP nanosheets make it possible to apply it in ultraviolet laser as saturable absorber, which can broaden its application in ultraviolet nonlinear optics.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanotechnology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1088/1361-6528/ae0f21","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Black phosphorus (BP) has attracted much attention due to its distinctive band-gap properties and strong light-matter interaction, which make it a promising nonlinear optical material. In this study, BP nanosheets were exfoliated successfully utilizing the liquid phase exfoliation technique. Using an open-aperture Z-scan method, the broadband nonlinear absorption characteristics of BP nanosheets were studied. Under 355 nm excitation, the BP nanosheets demonstrated pronounced saturation absorption properties, with the maximum normalized transmittance of the wave peaks reaching 149% at an excitation energy of 7 μJ. Moreover, the threshold for nonlinear absorption behavior in BP nanosheets at 355 nm was approximately 0.023 GW/cm².The results showed that BP nanosheets possess strong saturable absorption properties in ultraviolet waveband. The saturable absorption characteristics of BP nanosheets make it possible to apply it in ultraviolet laser as saturable absorber, which can broaden its application in ultraviolet nonlinear optics.
期刊介绍：
The journal aims to publish papers at the forefront of nanoscale science and technology and especially those of an interdisciplinary nature. Here, nanotechnology is taken to include the ability to individually address, control, and modify structures, materials and devices with nanometre precision, and the synthesis of such structures into systems of micro- and macroscopic dimensions such as MEMS based devices. It encompasses the understanding of the fundamental physics, chemistry, biology and technology of nanometre-scale objects and how such objects can be used in the areas of computation, sensors, nanostructured materials and nano-biotechnology.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
