学科分类
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3 个结果
  • 简介:Wepresenttheworkflowofthedesign,realizationandtestingofdeformablemirrorssuitableforhighpowerdiodepumpedsolid-statelasers.Itstartswiththestudyoftheaberrationtobecorrected,andthenitcontinueswiththedesignoftheactuatorspositionandcharacteristic.Inthispaper,wepresentandcomparethreedeformablemirrorsrealizedformulti-Jlevellaserfacilities.Weshowthatwiththesamedesignconceptitispossibletorealizedeformablemirrorsforothertypesoflasers.Asanexample,wereporttherealizationofadeformablemirrorforfemtosecondlasersandforaCWCO2laser.

  • 标签: ADAPTIVE OPTICS CLOSED LOOP deformable MIRROR
  • 简介:ThetraditionalorientedFASTandrotatedBRIEF(ORB)algorithmhasproblemsofinstabilityandrepetitionofkeypointsanditdoesnotpossessscaleinvariance.Inordertodealwiththesedrawbacks,amodifiedORB(MORB)algorithmisproposed.Inordertoimprovetheprecisionofmatchingandtracking,thispaperputsforwardanMOKalgorithmthatfusesMORBandKanade-Lucas-Tomasi(KLT).ByusingKalman,theobject’sstateinthenextframeispredictedinordertoreducethesizeofsearchwindowandimprovethereal-timeperformanceofobjecttracking.TheexperimentalresultsshowthattheMOKalgorithmcanaccuratelytrackobjectswithdeformationorwithbackgroundclutters,exhibitinghigherrobustnessandaccuracyondiversedatasets.Also,theMOKalgorithmhasagoodreal-timeperformancewiththeaverageframeratereaching90.8fps.

  • 标签: 对象跟踪 实时性能 可变形 算法 物体 尺度不变性
  • 简介:Thedeformablemirrorwiththesizeof410mmstackswasdeveloped.Theresults×468mmcontrolledbythebimorphpiezoceramicplatesandmultilayerpiezoceramicofthemeasurementsoftheresponsefunctionsofalltheactuatorsandofthesurfaceshapeofthedeformablemirrorarepresentedinthispaper.ThestudyofthemirrorwithaFizeauinterferometerandaShack–Hartmannwavefrontsensorhasshownthatitwaspossibletoimprovetheflatnessofthesurfacedowntoaresidualroughnessof0.033μm(RMS).Thepossibilityofcorrectionoftheaberrationsinhigh-powerlaserswasnumericallydemonstrated.

  • 标签: deformable MIRROR HIGH-POWER laser piezoelectric ACTUATOR