摘要
Wedemonstratethatferroferric-oxide（Fe3O4）nanoparticlesexhibitnonlinearsaturableabsorptionpropertyat1.55μm,andfabricatetwofilmysaturableabsorbersbyembeddingthenanoparticlesintoapolyvinylalcohol（PVA）filmorpolyimide（PI）filmseparately.IntheFe3O4-PVA（Fe3O4-PI）Q-switchedfiberlaser,thepulserepetitionrateincreasesfrom8.5kHz（5.5kHz）to28kHz（49kHz）andthepulsedurationdecreasesfrom23.5μs（47μs）to6μs（3.5μs）byvaryingthepumppowerfrom25mW（23mW）to150mW（650mW）.ExperimentresultsindicatethatPI-basedsaturableabsorberscanaffordlargerpowersthanPVA-basedsaturableabsorbers,whichcanbeattributedtothehigherfusionpointofthePIfilm.TheFe3O4-PIsaturableabsorberexhibitsfeaturesofhighdamagethreshold,lowcost,andgoodflexibility,whichcouldbeappliedinfieldsofnear-infraredpulsegenerationandfrequencyconversions.
出版日期
2017年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
