简介:Wepresenttheworkflowofthedesign,realizationandtestingofdeformablemirrorssuitableforhighpowerdiodepumpedsolid-statelasers.Itstartswiththestudyoftheaberrationtobecorrected,andthenitcontinueswiththedesignoftheactuatorspositionandcharacteristic.Inthispaper,wepresentandcomparethreedeformablemirrorsrealizedformulti-Jlevellaserfacilities.Weshowthatwiththesamedesignconceptitispossibletorealizedeformablemirrorsforothertypesoflasers.Asanexample,wereporttherealizationofadeformablemirrorforfemtosecondlasersandforaCWCO2laser.
简介:ThetraditionalorientedFASTandrotatedBRIEF(ORB)algorithmhasproblemsofinstabilityandrepetitionofkeypointsanditdoesnotpossessscaleinvariance.Inordertodealwiththesedrawbacks,amodifiedORB(MORB)algorithmisproposed.Inordertoimprovetheprecisionofmatchingandtracking,thispaperputsforwardanMOKalgorithmthatfusesMORBandKanade-Lucas-Tomasi(KLT).ByusingKalman,theobject’sstateinthenextframeispredictedinordertoreducethesizeofsearchwindowandimprovethereal-timeperformanceofobjecttracking.TheexperimentalresultsshowthattheMOKalgorithmcanaccuratelytrackobjectswithdeformationorwithbackgroundclutters,exhibitinghigherrobustnessandaccuracyondiversedatasets.Also,theMOKalgorithmhasagoodreal-timeperformancewiththeaverageframeratereaching90.8fps.
简介:Thedeformablemirrorwiththesizeof410mmstackswasdeveloped.Theresults×468mmcontrolledbythebimorphpiezoceramicplatesandmultilayerpiezoceramicofthemeasurementsoftheresponsefunctionsofalltheactuatorsandofthesurfaceshapeofthedeformablemirrorarepresentedinthispaper.ThestudyofthemirrorwithaFizeauinterferometerandaShack–Hartmannwavefrontsensorhasshownthatitwaspossibletoimprovetheflatnessofthesurfacedowntoaresidualroughnessof0.033μm(RMS).Thepossibilityofcorrectionoftheaberrationsinhigh-powerlaserswasnumericallydemonstrated.