简介:Awavelength-sweptlaserisconstructedusingafreespaceexternalcavityconfigurationcoupledwithafiberbasedringcavityatthe850nmregion.Theexternalcavityfilteremploysagalvo-mirrorscannerwithadiffractiongratingforwavelengthselection.Thefilterisconnectedtoaringcavitythroughanopticalcirculator.Theringcavitycontainsabroadbandsemiconductoropticalamplifierwithahighopticaloutput.Theperformanceofthislaserisdemonstratedwithbroadbandwidthsandnarrowlinewidths.The3dBlinewidthandthebandwidthofthissourceare0.05nm(~20GHz)and48nm,respectively.Themaximumoutputpoweris26mWat160mAcurrent.